Abstract

As a new quantum state of matter, topological insulators offer a new platform for exploring new physics, giving rise to fascinating new phenomena and new devices. Lots of novel physical properties of topological insulators have been studied extensively and are attributed to the unique electron-phonon interactions at the surface. Although electron behavior in topological insulators has been studied in detail, electron-phonon interactions at the surface of topological insulators are less understood. In this work, using optical pump-optical probe technology, we performed transient absorbance measurement on Bi2Te3 thin films to study the dynamics of its hot carrier relaxation process and coherent phonon behavior. The excitation and dynamics of phonon modes are observed with a response dependent on the thickness of the samples. The thickness-dependent characteristic time, amplitude and frequency of the damped oscillating signals are acquired by fitting the signal profiles. The results clearly indicate that the electron-hole recombination process gradually become dominant with the increasing thickness which is consistent with our theoretical calculation. In addition, a frequency modulation phenomenon on the high-frequency oscillation signals induced by coherent optical phonons is observed.

© 2017 Optical Society of America

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    [Crossref]
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2017 (1)

P. Le, P. Liu, C. Luo, J. Lin, and K. Wu, “Thickness-dependent magnetotransport properties and terahertz response of topological insulator Bi2Te3 thin films,” J. Alloys Compd. 692, 972–979 (2017).
[Crossref]

2016 (3)

M. C. Wang, S. Qiao, Z. Jiang, S. N. Luo, and J. Qi, “Unraveling Photoinduced Spin Dynamics in the Topological Insulator Bi2Se3.,” Phys. Rev. Lett. 116(3), 036601 (2016).
[Crossref] [PubMed]

J. Wang, L. Guo, C. Ling, Y. Song, X. Xu, Z. Ni, and Y. Chen, “Carrier dynamics in femtosecond-laser-excited bismuth telluride,” Phys. Rev. B 93(15), 155306 (2016).
[Crossref]

K. Wei, X. Zheng, X. Cheng, C. Shen, and T. Jiang, “Observation of Ultrafast Exciton–Exciton Annihilation in CsPbBr3 Quantum Dots,” Adv. Opt. Mater. 4(12), 1993–1997 (2016).
[Crossref]

2015 (3)

X. Zheng, R. Chen, G. Shi, J. Zhang, Z. Xu, X. Cheng, and T. Jiang, “Characterization of nonlinear properties of black phosphorus nanoplatelets with femtosecond pulsed Z-scan measurements,” Opt. Lett. 40(15), 3480–3483 (2015).
[Crossref] [PubMed]

A. Bykov, T. Murzina, N. Olivier, G. Wurtz, and A. Zayats, “Coherent lattice dynamics in topological insulator Bi2Te3 probed with time-resolved optical second-harmonic generation,” Phys. Rev. B 92(6), 064305 (2015).
[Crossref]

S. Y. Maezawa, H. Watanabe, M. Takeda, K. Kuroda, T. Someya, I. Matsuda, and T. Suemoto, “Optically detecting the edge-state of a three-dimensional topological insulator under ambient conditions by ultrafast infrared photoluminescence spectroscopy,” Sci. Rep. 5(1), 16443 (2015).
[Crossref] [PubMed]

2014 (3)

Y. Lai, H. Chen, K. Wu, and J. Liu, “Temperature-dependent carrier–phonon coupling in topological insulator Bi2Se3,” Appl. Phys. Lett. 105(23), 232110 (2014).
[Crossref]

Y. Zhao, X. Luo, J. Zhang, J. Wu, X. Bai, M. Wang, J. Jia, H. Peng, Z. Liu, S. Quek, and Q. Xion, “Interlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies,” Phys. Rev. B 90(24), 245428 (2014).
[Crossref]

L. Cheng, C. La-o-vorakiat, C. Tang, S. Nair, B. Xia, L. Wang, J. Zhu, and E. Chia, “Temperature-dependent ultrafast carrier and phonon dynamics of topological insulator Bi1.5Sb0.5Te1.8Se1.2,” Appl. Phys. Lett. 104(21), 211906 (2014).
[Crossref]

2013 (5)

Y. Wang, L. Guo, X. Xu, J. Pierce, and R. Venkatasubramanian, “Origin of coherent phonons in Bi2Te3 excited by ultrafast laser pulses,” Phys. Rev. B 88(6), 064307 (2013).
[Crossref]

C. Wang, X. Zhu, L. Nilsson, J. Wen, G. Wang, X. Shan, Q. Zhang, S. Zhang, J. Jia, and Q. Xue, “In situ Raman spectroscopy of topological insulator Bi2Te3 films with varying thickness,” Nano Res. 6(9), 688–692 (2013).
[Crossref]

J. J. Li, J. Chen, D. A. Reis, S. Fahy, and R. Merlin, “Optical Probing of Ultrafast Electronic Decay in Bi and Sb with Slow Phonons,” Phys. Rev. Lett. 110(4), 047401 (2013).
[Crossref] [PubMed]

S. Li, D. Zhou, T. Wen, W. Zhu, Z. Song, and T. Lai, “Femtosecond laser-irradiated crystallization of amorphous Si2Sb2Te3 films and its in-situ characterization by coherent phonon spectroscopy,” Opt. Express 21(8), 10222–10227 (2013).
[Crossref] [PubMed]

Y. Sheu, Y. Chien, C. Uher, S. Fahy, and D. Reis, “Free-carrier relaxation and lattice heating in photoexcited bismuth,” Phys. Rev. B 87(7), 075429 (2013).
[Crossref]

2012 (4)

D. Pesin and A. H. MacDonald, “Spintronics and pseudospintronics in graphene and topological insulators,” Nat. Mater. 11(5), 409–416 (2012).
[Crossref] [PubMed]

Y. Wang, F. Xiu, L. Cheng, L. He, M. Lang, J. Tang, X. Kou, X. Yu, X. Jiang, Z. Chen, J. Zou, and K. L. Wang, “Gate-controlled surface conduction in Na-doped Bi2Te3 topological insulator nanoplates,” Nano Lett. 12(3), 1170–1175 (2012).
[Crossref] [PubMed]

M. Hajlaoui, E. Papalazarou, J. Mauchain, G. Lantz, N. Moisan, D. Boschetto, Z. Jiang, I. Miotkowski, Y. P. Chen, A. Taleb-Ibrahimi, L. Perfetti, and M. Marsi, “Ultrafast surface carrier dynamics in the topological insulator Bi2Te3,” Nano Lett. 12(7), 3532–3536 (2012).
[Crossref] [PubMed]

H. Chen, K. Wu, C. Luo, T. Uen, J. Juang, J. Lin, T. Kobayashi, H. Yang, R. Sankar, F. Chou, H. Berger, and J. Liu, “Phonon dynamics in CuxBi2Se3 (x=0, 0.1, 0.125) and Bi2Se2 crystals studied using femtosecond spectroscopy,” Appl. Phys. Lett. 101(12), 3045 (2012).
[Crossref]

2011 (2)

S. Li, H. Huang, W. Zhu, W. Wang, K. Chen, D. Yao, Y. Wang, T. Lai, Y. Wu, and F. Gan, “Femtosecond laser-induced crystallization of amorphous Sb2Te3 film and coherent phonon spectroscopy characterization and optical injection of electron spins,” J. Appl. Phys. 110(5), 113114 (2011).
[Crossref]

N. Kumar, B. Ruzicka, N. Butch, P. Syers, K. Kirshenbaum, J. Paglione, and H. Zhao, “Spatially resolved femtosecond pump-probe study of topological insulator Bi2Se3,” Phys. Rev. B 83(23), 235306 (2011).
[Crossref]

2010 (4)

J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. Tolk, I. Miotkowski, H. Cao, Y. Chen, Y. Wu, S. Qiao, and Z. Jiang, “Ultrafast carrier and phonon dynamics in Bi2Se3 crystals,” Appl. Phys. Lett. 97(18), 182102 (2010).
[Crossref]

M. Hasan and C. Kane, “Colloquium: Topological insulators,” Rev. Mod. Phys. 82(4), 3045–3067 (2010).
[Crossref]

Y. Li, V. Stoica, L. Endicott, G. Wang, C. Uher, and R. Clarke, “Coherent optical phonon spectroscopy of femtosecond-laser modified Sb2Te3 films,” Appl. Phys. Lett. 97(17), 171908 (2010).
[Crossref]

Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
[Crossref]

2009 (1)

G. Zhang, H. Qin, J. Teng, J. Guo, Q. Guo, X. Dai, Z. Fang, and K. Wu, “Quintuple-layer epitaxy of thin films of topological insulator Bi2Se3,” Appl. Phys. Lett. 95(5), 053114 (2009).
[Crossref]

2008 (3)

Y. Wang, X. Xu, and R. Venkatasubramanian, “Reduction in coherent phonon lifetime in Bi2Te3/Sb2Te3 superlattices,” Appl. Phys. Lett. 93(11), 1004 (2008).
[Crossref]

T. Garl, E. Gamaly, D. Boschetto, A. Rode, B. Luther-Davies, and A. Rousse, “Birth and decay of coherent optical phonons in femtosecond-laser-excited bismuth,” Phys. Rev. B 78(13), 134302 (2008).
[Crossref]

D. Boschetto, E. G. Gamaly, A. V. Rode, B. Luther-Davies, D. Glijer, T. Garl, O. Albert, A. Rousse, and J. Etchepare, “Small Atomic Displacements Recorded in Bismuth by the Optical Reflectivity of Femtosecond Laser-Pulse Excitations,” Phys. Rev. Lett. 100(2), 027404 (2008).
[Crossref] [PubMed]

2005 (1)

C. L. Kane and E. J. Mele, “Z2 Topological Order and the Quantum Spin Hall Effect,” Phys. Rev. Lett. 95(14), 146802 (2005).
[Crossref] [PubMed]

1999 (1)

F. J. DiSalvo, “Thermoelectric cooling and power generation,” Science 285(5428), 703–706 (1999).
[Crossref] [PubMed]

Albert, O.

D. Boschetto, E. G. Gamaly, A. V. Rode, B. Luther-Davies, D. Glijer, T. Garl, O. Albert, A. Rousse, and J. Etchepare, “Small Atomic Displacements Recorded in Bismuth by the Optical Reflectivity of Femtosecond Laser-Pulse Excitations,” Phys. Rev. Lett. 100(2), 027404 (2008).
[Crossref] [PubMed]

Bai, X.

Y. Zhao, X. Luo, J. Zhang, J. Wu, X. Bai, M. Wang, J. Jia, H. Peng, Z. Liu, S. Quek, and Q. Xion, “Interlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies,” Phys. Rev. B 90(24), 245428 (2014).
[Crossref]

Berger, H.

H. Chen, K. Wu, C. Luo, T. Uen, J. Juang, J. Lin, T. Kobayashi, H. Yang, R. Sankar, F. Chou, H. Berger, and J. Liu, “Phonon dynamics in CuxBi2Se3 (x=0, 0.1, 0.125) and Bi2Se2 crystals studied using femtosecond spectroscopy,” Appl. Phys. Lett. 101(12), 3045 (2012).
[Crossref]

Boschetto, D.

M. Hajlaoui, E. Papalazarou, J. Mauchain, G. Lantz, N. Moisan, D. Boschetto, Z. Jiang, I. Miotkowski, Y. P. Chen, A. Taleb-Ibrahimi, L. Perfetti, and M. Marsi, “Ultrafast surface carrier dynamics in the topological insulator Bi2Te3,” Nano Lett. 12(7), 3532–3536 (2012).
[Crossref] [PubMed]

T. Garl, E. Gamaly, D. Boschetto, A. Rode, B. Luther-Davies, and A. Rousse, “Birth and decay of coherent optical phonons in femtosecond-laser-excited bismuth,” Phys. Rev. B 78(13), 134302 (2008).
[Crossref]

D. Boschetto, E. G. Gamaly, A. V. Rode, B. Luther-Davies, D. Glijer, T. Garl, O. Albert, A. Rousse, and J. Etchepare, “Small Atomic Displacements Recorded in Bismuth by the Optical Reflectivity of Femtosecond Laser-Pulse Excitations,” Phys. Rev. Lett. 100(2), 027404 (2008).
[Crossref] [PubMed]

Butch, N.

N. Kumar, B. Ruzicka, N. Butch, P. Syers, K. Kirshenbaum, J. Paglione, and H. Zhao, “Spatially resolved femtosecond pump-probe study of topological insulator Bi2Se3,” Phys. Rev. B 83(23), 235306 (2011).
[Crossref]

Bykov, A.

A. Bykov, T. Murzina, N. Olivier, G. Wurtz, and A. Zayats, “Coherent lattice dynamics in topological insulator Bi2Te3 probed with time-resolved optical second-harmonic generation,” Phys. Rev. B 92(6), 064305 (2015).
[Crossref]

Cadden-Zimansky, P.

J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. Tolk, I. Miotkowski, H. Cao, Y. Chen, Y. Wu, S. Qiao, and Z. Jiang, “Ultrafast carrier and phonon dynamics in Bi2Se3 crystals,” Appl. Phys. Lett. 97(18), 182102 (2010).
[Crossref]

Cao, H.

J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. Tolk, I. Miotkowski, H. Cao, Y. Chen, Y. Wu, S. Qiao, and Z. Jiang, “Ultrafast carrier and phonon dynamics in Bi2Se3 crystals,” Appl. Phys. Lett. 97(18), 182102 (2010).
[Crossref]

Chang, C.

Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
[Crossref]

Chen, H.

Y. Lai, H. Chen, K. Wu, and J. Liu, “Temperature-dependent carrier–phonon coupling in topological insulator Bi2Se3,” Appl. Phys. Lett. 105(23), 232110 (2014).
[Crossref]

H. Chen, K. Wu, C. Luo, T. Uen, J. Juang, J. Lin, T. Kobayashi, H. Yang, R. Sankar, F. Chou, H. Berger, and J. Liu, “Phonon dynamics in CuxBi2Se3 (x=0, 0.1, 0.125) and Bi2Se2 crystals studied using femtosecond spectroscopy,” Appl. Phys. Lett. 101(12), 3045 (2012).
[Crossref]

Chen, J.

J. J. Li, J. Chen, D. A. Reis, S. Fahy, and R. Merlin, “Optical Probing of Ultrafast Electronic Decay in Bi and Sb with Slow Phonons,” Phys. Rev. Lett. 110(4), 047401 (2013).
[Crossref] [PubMed]

Chen, K.

S. Li, H. Huang, W. Zhu, W. Wang, K. Chen, D. Yao, Y. Wang, T. Lai, Y. Wu, and F. Gan, “Femtosecond laser-induced crystallization of amorphous Sb2Te3 film and coherent phonon spectroscopy characterization and optical injection of electron spins,” J. Appl. Phys. 110(5), 113114 (2011).
[Crossref]

Chen, R.

Chen, X.

Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
[Crossref]

J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. Tolk, I. Miotkowski, H. Cao, Y. Chen, Y. Wu, S. Qiao, and Z. Jiang, “Ultrafast carrier and phonon dynamics in Bi2Se3 crystals,” Appl. Phys. Lett. 97(18), 182102 (2010).
[Crossref]

Chen, Y.

J. Wang, L. Guo, C. Ling, Y. Song, X. Xu, Z. Ni, and Y. Chen, “Carrier dynamics in femtosecond-laser-excited bismuth telluride,” Phys. Rev. B 93(15), 155306 (2016).
[Crossref]

J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. Tolk, I. Miotkowski, H. Cao, Y. Chen, Y. Wu, S. Qiao, and Z. Jiang, “Ultrafast carrier and phonon dynamics in Bi2Se3 crystals,” Appl. Phys. Lett. 97(18), 182102 (2010).
[Crossref]

Chen, Y. P.

M. Hajlaoui, E. Papalazarou, J. Mauchain, G. Lantz, N. Moisan, D. Boschetto, Z. Jiang, I. Miotkowski, Y. P. Chen, A. Taleb-Ibrahimi, L. Perfetti, and M. Marsi, “Ultrafast surface carrier dynamics in the topological insulator Bi2Te3,” Nano Lett. 12(7), 3532–3536 (2012).
[Crossref] [PubMed]

Chen, Z.

Y. Wang, F. Xiu, L. Cheng, L. He, M. Lang, J. Tang, X. Kou, X. Yu, X. Jiang, Z. Chen, J. Zou, and K. L. Wang, “Gate-controlled surface conduction in Na-doped Bi2Te3 topological insulator nanoplates,” Nano Lett. 12(3), 1170–1175 (2012).
[Crossref] [PubMed]

Cheng, L.

L. Cheng, C. La-o-vorakiat, C. Tang, S. Nair, B. Xia, L. Wang, J. Zhu, and E. Chia, “Temperature-dependent ultrafast carrier and phonon dynamics of topological insulator Bi1.5Sb0.5Te1.8Se1.2,” Appl. Phys. Lett. 104(21), 211906 (2014).
[Crossref]

Y. Wang, F. Xiu, L. Cheng, L. He, M. Lang, J. Tang, X. Kou, X. Yu, X. Jiang, Z. Chen, J. Zou, and K. L. Wang, “Gate-controlled surface conduction in Na-doped Bi2Te3 topological insulator nanoplates,” Nano Lett. 12(3), 1170–1175 (2012).
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Cheng, X.

K. Wei, X. Zheng, X. Cheng, C. Shen, and T. Jiang, “Observation of Ultrafast Exciton–Exciton Annihilation in CsPbBr3 Quantum Dots,” Adv. Opt. Mater. 4(12), 1993–1997 (2016).
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X. Zheng, R. Chen, G. Shi, J. Zhang, Z. Xu, X. Cheng, and T. Jiang, “Characterization of nonlinear properties of black phosphorus nanoplatelets with femtosecond pulsed Z-scan measurements,” Opt. Lett. 40(15), 3480–3483 (2015).
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Chia, E.

L. Cheng, C. La-o-vorakiat, C. Tang, S. Nair, B. Xia, L. Wang, J. Zhu, and E. Chia, “Temperature-dependent ultrafast carrier and phonon dynamics of topological insulator Bi1.5Sb0.5Te1.8Se1.2,” Appl. Phys. Lett. 104(21), 211906 (2014).
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H. Chen, K. Wu, C. Luo, T. Uen, J. Juang, J. Lin, T. Kobayashi, H. Yang, R. Sankar, F. Chou, H. Berger, and J. Liu, “Phonon dynamics in CuxBi2Se3 (x=0, 0.1, 0.125) and Bi2Se2 crystals studied using femtosecond spectroscopy,” Appl. Phys. Lett. 101(12), 3045 (2012).
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Y. Li, V. Stoica, L. Endicott, G. Wang, C. Uher, and R. Clarke, “Coherent optical phonon spectroscopy of femtosecond-laser modified Sb2Te3 films,” Appl. Phys. Lett. 97(17), 171908 (2010).
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Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
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G. Zhang, H. Qin, J. Teng, J. Guo, Q. Guo, X. Dai, Z. Fang, and K. Wu, “Quintuple-layer epitaxy of thin films of topological insulator Bi2Se3,” Appl. Phys. Lett. 95(5), 053114 (2009).
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Y. Li, V. Stoica, L. Endicott, G. Wang, C. Uher, and R. Clarke, “Coherent optical phonon spectroscopy of femtosecond-laser modified Sb2Te3 films,” Appl. Phys. Lett. 97(17), 171908 (2010).
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D. Boschetto, E. G. Gamaly, A. V. Rode, B. Luther-Davies, D. Glijer, T. Garl, O. Albert, A. Rousse, and J. Etchepare, “Small Atomic Displacements Recorded in Bismuth by the Optical Reflectivity of Femtosecond Laser-Pulse Excitations,” Phys. Rev. Lett. 100(2), 027404 (2008).
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Fahy, S.

J. J. Li, J. Chen, D. A. Reis, S. Fahy, and R. Merlin, “Optical Probing of Ultrafast Electronic Decay in Bi and Sb with Slow Phonons,” Phys. Rev. Lett. 110(4), 047401 (2013).
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Y. Sheu, Y. Chien, C. Uher, S. Fahy, and D. Reis, “Free-carrier relaxation and lattice heating in photoexcited bismuth,” Phys. Rev. B 87(7), 075429 (2013).
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Fang, Z.

Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
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G. Zhang, H. Qin, J. Teng, J. Guo, Q. Guo, X. Dai, Z. Fang, and K. Wu, “Quintuple-layer epitaxy of thin films of topological insulator Bi2Se3,” Appl. Phys. Lett. 95(5), 053114 (2009).
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T. Garl, E. Gamaly, D. Boschetto, A. Rode, B. Luther-Davies, and A. Rousse, “Birth and decay of coherent optical phonons in femtosecond-laser-excited bismuth,” Phys. Rev. B 78(13), 134302 (2008).
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Gamaly, E. G.

D. Boschetto, E. G. Gamaly, A. V. Rode, B. Luther-Davies, D. Glijer, T. Garl, O. Albert, A. Rousse, and J. Etchepare, “Small Atomic Displacements Recorded in Bismuth by the Optical Reflectivity of Femtosecond Laser-Pulse Excitations,” Phys. Rev. Lett. 100(2), 027404 (2008).
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Gan, F.

S. Li, H. Huang, W. Zhu, W. Wang, K. Chen, D. Yao, Y. Wang, T. Lai, Y. Wu, and F. Gan, “Femtosecond laser-induced crystallization of amorphous Sb2Te3 film and coherent phonon spectroscopy characterization and optical injection of electron spins,” J. Appl. Phys. 110(5), 113114 (2011).
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T. Garl, E. Gamaly, D. Boschetto, A. Rode, B. Luther-Davies, and A. Rousse, “Birth and decay of coherent optical phonons in femtosecond-laser-excited bismuth,” Phys. Rev. B 78(13), 134302 (2008).
[Crossref]

D. Boschetto, E. G. Gamaly, A. V. Rode, B. Luther-Davies, D. Glijer, T. Garl, O. Albert, A. Rousse, and J. Etchepare, “Small Atomic Displacements Recorded in Bismuth by the Optical Reflectivity of Femtosecond Laser-Pulse Excitations,” Phys. Rev. Lett. 100(2), 027404 (2008).
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Glijer, D.

D. Boschetto, E. G. Gamaly, A. V. Rode, B. Luther-Davies, D. Glijer, T. Garl, O. Albert, A. Rousse, and J. Etchepare, “Small Atomic Displacements Recorded in Bismuth by the Optical Reflectivity of Femtosecond Laser-Pulse Excitations,” Phys. Rev. Lett. 100(2), 027404 (2008).
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Guo, J.

G. Zhang, H. Qin, J. Teng, J. Guo, Q. Guo, X. Dai, Z. Fang, and K. Wu, “Quintuple-layer epitaxy of thin films of topological insulator Bi2Se3,” Appl. Phys. Lett. 95(5), 053114 (2009).
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Guo, L.

J. Wang, L. Guo, C. Ling, Y. Song, X. Xu, Z. Ni, and Y. Chen, “Carrier dynamics in femtosecond-laser-excited bismuth telluride,” Phys. Rev. B 93(15), 155306 (2016).
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Y. Wang, L. Guo, X. Xu, J. Pierce, and R. Venkatasubramanian, “Origin of coherent phonons in Bi2Te3 excited by ultrafast laser pulses,” Phys. Rev. B 88(6), 064307 (2013).
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G. Zhang, H. Qin, J. Teng, J. Guo, Q. Guo, X. Dai, Z. Fang, and K. Wu, “Quintuple-layer epitaxy of thin films of topological insulator Bi2Se3,” Appl. Phys. Lett. 95(5), 053114 (2009).
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M. Hajlaoui, E. Papalazarou, J. Mauchain, G. Lantz, N. Moisan, D. Boschetto, Z. Jiang, I. Miotkowski, Y. P. Chen, A. Taleb-Ibrahimi, L. Perfetti, and M. Marsi, “Ultrafast surface carrier dynamics in the topological insulator Bi2Te3,” Nano Lett. 12(7), 3532–3536 (2012).
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M. Hasan and C. Kane, “Colloquium: Topological insulators,” Rev. Mod. Phys. 82(4), 3045–3067 (2010).
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Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
[Crossref]

He, L.

Y. Wang, F. Xiu, L. Cheng, L. He, M. Lang, J. Tang, X. Kou, X. Yu, X. Jiang, Z. Chen, J. Zou, and K. L. Wang, “Gate-controlled surface conduction in Na-doped Bi2Te3 topological insulator nanoplates,” Nano Lett. 12(3), 1170–1175 (2012).
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S. Li, H. Huang, W. Zhu, W. Wang, K. Chen, D. Yao, Y. Wang, T. Lai, Y. Wu, and F. Gan, “Femtosecond laser-induced crystallization of amorphous Sb2Te3 film and coherent phonon spectroscopy characterization and optical injection of electron spins,” J. Appl. Phys. 110(5), 113114 (2011).
[Crossref]

Jia, J.

Y. Zhao, X. Luo, J. Zhang, J. Wu, X. Bai, M. Wang, J. Jia, H. Peng, Z. Liu, S. Quek, and Q. Xion, “Interlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies,” Phys. Rev. B 90(24), 245428 (2014).
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C. Wang, X. Zhu, L. Nilsson, J. Wen, G. Wang, X. Shan, Q. Zhang, S. Zhang, J. Jia, and Q. Xue, “In situ Raman spectroscopy of topological insulator Bi2Te3 films with varying thickness,” Nano Res. 6(9), 688–692 (2013).
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Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
[Crossref]

Jiang, T.

K. Wei, X. Zheng, X. Cheng, C. Shen, and T. Jiang, “Observation of Ultrafast Exciton–Exciton Annihilation in CsPbBr3 Quantum Dots,” Adv. Opt. Mater. 4(12), 1993–1997 (2016).
[Crossref]

X. Zheng, R. Chen, G. Shi, J. Zhang, Z. Xu, X. Cheng, and T. Jiang, “Characterization of nonlinear properties of black phosphorus nanoplatelets with femtosecond pulsed Z-scan measurements,” Opt. Lett. 40(15), 3480–3483 (2015).
[Crossref] [PubMed]

Jiang, X.

Y. Wang, F. Xiu, L. Cheng, L. He, M. Lang, J. Tang, X. Kou, X. Yu, X. Jiang, Z. Chen, J. Zou, and K. L. Wang, “Gate-controlled surface conduction in Na-doped Bi2Te3 topological insulator nanoplates,” Nano Lett. 12(3), 1170–1175 (2012).
[Crossref] [PubMed]

Jiang, Z.

M. C. Wang, S. Qiao, Z. Jiang, S. N. Luo, and J. Qi, “Unraveling Photoinduced Spin Dynamics in the Topological Insulator Bi2Se3.,” Phys. Rev. Lett. 116(3), 036601 (2016).
[Crossref] [PubMed]

M. Hajlaoui, E. Papalazarou, J. Mauchain, G. Lantz, N. Moisan, D. Boschetto, Z. Jiang, I. Miotkowski, Y. P. Chen, A. Taleb-Ibrahimi, L. Perfetti, and M. Marsi, “Ultrafast surface carrier dynamics in the topological insulator Bi2Te3,” Nano Lett. 12(7), 3532–3536 (2012).
[Crossref] [PubMed]

J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. Tolk, I. Miotkowski, H. Cao, Y. Chen, Y. Wu, S. Qiao, and Z. Jiang, “Ultrafast carrier and phonon dynamics in Bi2Se3 crystals,” Appl. Phys. Lett. 97(18), 182102 (2010).
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Juang, J.

H. Chen, K. Wu, C. Luo, T. Uen, J. Juang, J. Lin, T. Kobayashi, H. Yang, R. Sankar, F. Chou, H. Berger, and J. Liu, “Phonon dynamics in CuxBi2Se3 (x=0, 0.1, 0.125) and Bi2Se2 crystals studied using femtosecond spectroscopy,” Appl. Phys. Lett. 101(12), 3045 (2012).
[Crossref]

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M. Hasan and C. Kane, “Colloquium: Topological insulators,” Rev. Mod. Phys. 82(4), 3045–3067 (2010).
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C. L. Kane and E. J. Mele, “Z2 Topological Order and the Quantum Spin Hall Effect,” Phys. Rev. Lett. 95(14), 146802 (2005).
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Kirshenbaum, K.

N. Kumar, B. Ruzicka, N. Butch, P. Syers, K. Kirshenbaum, J. Paglione, and H. Zhao, “Spatially resolved femtosecond pump-probe study of topological insulator Bi2Se3,” Phys. Rev. B 83(23), 235306 (2011).
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Kobayashi, T.

H. Chen, K. Wu, C. Luo, T. Uen, J. Juang, J. Lin, T. Kobayashi, H. Yang, R. Sankar, F. Chou, H. Berger, and J. Liu, “Phonon dynamics in CuxBi2Se3 (x=0, 0.1, 0.125) and Bi2Se2 crystals studied using femtosecond spectroscopy,” Appl. Phys. Lett. 101(12), 3045 (2012).
[Crossref]

Kou, X.

Y. Wang, F. Xiu, L. Cheng, L. He, M. Lang, J. Tang, X. Kou, X. Yu, X. Jiang, Z. Chen, J. Zou, and K. L. Wang, “Gate-controlled surface conduction in Na-doped Bi2Te3 topological insulator nanoplates,” Nano Lett. 12(3), 1170–1175 (2012).
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Kumar, N.

N. Kumar, B. Ruzicka, N. Butch, P. Syers, K. Kirshenbaum, J. Paglione, and H. Zhao, “Spatially resolved femtosecond pump-probe study of topological insulator Bi2Se3,” Phys. Rev. B 83(23), 235306 (2011).
[Crossref]

Kuroda, K.

S. Y. Maezawa, H. Watanabe, M. Takeda, K. Kuroda, T. Someya, I. Matsuda, and T. Suemoto, “Optically detecting the edge-state of a three-dimensional topological insulator under ambient conditions by ultrafast infrared photoluminescence spectroscopy,” Sci. Rep. 5(1), 16443 (2015).
[Crossref] [PubMed]

Lai, T.

S. Li, D. Zhou, T. Wen, W. Zhu, Z. Song, and T. Lai, “Femtosecond laser-irradiated crystallization of amorphous Si2Sb2Te3 films and its in-situ characterization by coherent phonon spectroscopy,” Opt. Express 21(8), 10222–10227 (2013).
[Crossref] [PubMed]

S. Li, H. Huang, W. Zhu, W. Wang, K. Chen, D. Yao, Y. Wang, T. Lai, Y. Wu, and F. Gan, “Femtosecond laser-induced crystallization of amorphous Sb2Te3 film and coherent phonon spectroscopy characterization and optical injection of electron spins,” J. Appl. Phys. 110(5), 113114 (2011).
[Crossref]

Lai, Y.

Y. Lai, H. Chen, K. Wu, and J. Liu, “Temperature-dependent carrier–phonon coupling in topological insulator Bi2Se3,” Appl. Phys. Lett. 105(23), 232110 (2014).
[Crossref]

Lang, M.

Y. Wang, F. Xiu, L. Cheng, L. He, M. Lang, J. Tang, X. Kou, X. Yu, X. Jiang, Z. Chen, J. Zou, and K. L. Wang, “Gate-controlled surface conduction in Na-doped Bi2Te3 topological insulator nanoplates,” Nano Lett. 12(3), 1170–1175 (2012).
[Crossref] [PubMed]

Lantz, G.

M. Hajlaoui, E. Papalazarou, J. Mauchain, G. Lantz, N. Moisan, D. Boschetto, Z. Jiang, I. Miotkowski, Y. P. Chen, A. Taleb-Ibrahimi, L. Perfetti, and M. Marsi, “Ultrafast surface carrier dynamics in the topological insulator Bi2Te3,” Nano Lett. 12(7), 3532–3536 (2012).
[Crossref] [PubMed]

La-o-vorakiat, C.

L. Cheng, C. La-o-vorakiat, C. Tang, S. Nair, B. Xia, L. Wang, J. Zhu, and E. Chia, “Temperature-dependent ultrafast carrier and phonon dynamics of topological insulator Bi1.5Sb0.5Te1.8Se1.2,” Appl. Phys. Lett. 104(21), 211906 (2014).
[Crossref]

Le, P.

P. Le, P. Liu, C. Luo, J. Lin, and K. Wu, “Thickness-dependent magnetotransport properties and terahertz response of topological insulator Bi2Te3 thin films,” J. Alloys Compd. 692, 972–979 (2017).
[Crossref]

Li, J. J.

J. J. Li, J. Chen, D. A. Reis, S. Fahy, and R. Merlin, “Optical Probing of Ultrafast Electronic Decay in Bi and Sb with Slow Phonons,” Phys. Rev. Lett. 110(4), 047401 (2013).
[Crossref] [PubMed]

Li, S.

S. Li, D. Zhou, T. Wen, W. Zhu, Z. Song, and T. Lai, “Femtosecond laser-irradiated crystallization of amorphous Si2Sb2Te3 films and its in-situ characterization by coherent phonon spectroscopy,” Opt. Express 21(8), 10222–10227 (2013).
[Crossref] [PubMed]

S. Li, H. Huang, W. Zhu, W. Wang, K. Chen, D. Yao, Y. Wang, T. Lai, Y. Wu, and F. Gan, “Femtosecond laser-induced crystallization of amorphous Sb2Te3 film and coherent phonon spectroscopy characterization and optical injection of electron spins,” J. Appl. Phys. 110(5), 113114 (2011).
[Crossref]

Li, Y.

Y. Li, V. Stoica, L. Endicott, G. Wang, C. Uher, and R. Clarke, “Coherent optical phonon spectroscopy of femtosecond-laser modified Sb2Te3 films,” Appl. Phys. Lett. 97(17), 171908 (2010).
[Crossref]

Lin, J.

P. Le, P. Liu, C. Luo, J. Lin, and K. Wu, “Thickness-dependent magnetotransport properties and terahertz response of topological insulator Bi2Te3 thin films,” J. Alloys Compd. 692, 972–979 (2017).
[Crossref]

H. Chen, K. Wu, C. Luo, T. Uen, J. Juang, J. Lin, T. Kobayashi, H. Yang, R. Sankar, F. Chou, H. Berger, and J. Liu, “Phonon dynamics in CuxBi2Se3 (x=0, 0.1, 0.125) and Bi2Se2 crystals studied using femtosecond spectroscopy,” Appl. Phys. Lett. 101(12), 3045 (2012).
[Crossref]

Ling, C.

J. Wang, L. Guo, C. Ling, Y. Song, X. Xu, Z. Ni, and Y. Chen, “Carrier dynamics in femtosecond-laser-excited bismuth telluride,” Phys. Rev. B 93(15), 155306 (2016).
[Crossref]

Liu, J.

Y. Lai, H. Chen, K. Wu, and J. Liu, “Temperature-dependent carrier–phonon coupling in topological insulator Bi2Se3,” Appl. Phys. Lett. 105(23), 232110 (2014).
[Crossref]

H. Chen, K. Wu, C. Luo, T. Uen, J. Juang, J. Lin, T. Kobayashi, H. Yang, R. Sankar, F. Chou, H. Berger, and J. Liu, “Phonon dynamics in CuxBi2Se3 (x=0, 0.1, 0.125) and Bi2Se2 crystals studied using femtosecond spectroscopy,” Appl. Phys. Lett. 101(12), 3045 (2012).
[Crossref]

Liu, P.

P. Le, P. Liu, C. Luo, J. Lin, and K. Wu, “Thickness-dependent magnetotransport properties and terahertz response of topological insulator Bi2Te3 thin films,” J. Alloys Compd. 692, 972–979 (2017).
[Crossref]

Liu, Z.

Y. Zhao, X. Luo, J. Zhang, J. Wu, X. Bai, M. Wang, J. Jia, H. Peng, Z. Liu, S. Quek, and Q. Xion, “Interlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies,” Phys. Rev. B 90(24), 245428 (2014).
[Crossref]

Luo, C.

P. Le, P. Liu, C. Luo, J. Lin, and K. Wu, “Thickness-dependent magnetotransport properties and terahertz response of topological insulator Bi2Te3 thin films,” J. Alloys Compd. 692, 972–979 (2017).
[Crossref]

H. Chen, K. Wu, C. Luo, T. Uen, J. Juang, J. Lin, T. Kobayashi, H. Yang, R. Sankar, F. Chou, H. Berger, and J. Liu, “Phonon dynamics in CuxBi2Se3 (x=0, 0.1, 0.125) and Bi2Se2 crystals studied using femtosecond spectroscopy,” Appl. Phys. Lett. 101(12), 3045 (2012).
[Crossref]

Luo, S. N.

M. C. Wang, S. Qiao, Z. Jiang, S. N. Luo, and J. Qi, “Unraveling Photoinduced Spin Dynamics in the Topological Insulator Bi2Se3.,” Phys. Rev. Lett. 116(3), 036601 (2016).
[Crossref] [PubMed]

Luo, X.

Y. Zhao, X. Luo, J. Zhang, J. Wu, X. Bai, M. Wang, J. Jia, H. Peng, Z. Liu, S. Quek, and Q. Xion, “Interlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies,” Phys. Rev. B 90(24), 245428 (2014).
[Crossref]

Luther-Davies, B.

D. Boschetto, E. G. Gamaly, A. V. Rode, B. Luther-Davies, D. Glijer, T. Garl, O. Albert, A. Rousse, and J. Etchepare, “Small Atomic Displacements Recorded in Bismuth by the Optical Reflectivity of Femtosecond Laser-Pulse Excitations,” Phys. Rev. Lett. 100(2), 027404 (2008).
[Crossref] [PubMed]

T. Garl, E. Gamaly, D. Boschetto, A. Rode, B. Luther-Davies, and A. Rousse, “Birth and decay of coherent optical phonons in femtosecond-laser-excited bismuth,” Phys. Rev. B 78(13), 134302 (2008).
[Crossref]

Ma, X.

Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
[Crossref]

MacDonald, A. H.

D. Pesin and A. H. MacDonald, “Spintronics and pseudospintronics in graphene and topological insulators,” Nat. Mater. 11(5), 409–416 (2012).
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Maezawa, S. Y.

S. Y. Maezawa, H. Watanabe, M. Takeda, K. Kuroda, T. Someya, I. Matsuda, and T. Suemoto, “Optically detecting the edge-state of a three-dimensional topological insulator under ambient conditions by ultrafast infrared photoluminescence spectroscopy,” Sci. Rep. 5(1), 16443 (2015).
[Crossref] [PubMed]

Marsi, M.

M. Hajlaoui, E. Papalazarou, J. Mauchain, G. Lantz, N. Moisan, D. Boschetto, Z. Jiang, I. Miotkowski, Y. P. Chen, A. Taleb-Ibrahimi, L. Perfetti, and M. Marsi, “Ultrafast surface carrier dynamics in the topological insulator Bi2Te3,” Nano Lett. 12(7), 3532–3536 (2012).
[Crossref] [PubMed]

Matsuda, I.

S. Y. Maezawa, H. Watanabe, M. Takeda, K. Kuroda, T. Someya, I. Matsuda, and T. Suemoto, “Optically detecting the edge-state of a three-dimensional topological insulator under ambient conditions by ultrafast infrared photoluminescence spectroscopy,” Sci. Rep. 5(1), 16443 (2015).
[Crossref] [PubMed]

Mauchain, J.

M. Hajlaoui, E. Papalazarou, J. Mauchain, G. Lantz, N. Moisan, D. Boschetto, Z. Jiang, I. Miotkowski, Y. P. Chen, A. Taleb-Ibrahimi, L. Perfetti, and M. Marsi, “Ultrafast surface carrier dynamics in the topological insulator Bi2Te3,” Nano Lett. 12(7), 3532–3536 (2012).
[Crossref] [PubMed]

Mele, E. J.

C. L. Kane and E. J. Mele, “Z2 Topological Order and the Quantum Spin Hall Effect,” Phys. Rev. Lett. 95(14), 146802 (2005).
[Crossref] [PubMed]

Merlin, R.

J. J. Li, J. Chen, D. A. Reis, S. Fahy, and R. Merlin, “Optical Probing of Ultrafast Electronic Decay in Bi and Sb with Slow Phonons,” Phys. Rev. Lett. 110(4), 047401 (2013).
[Crossref] [PubMed]

Miotkowski, I.

M. Hajlaoui, E. Papalazarou, J. Mauchain, G. Lantz, N. Moisan, D. Boschetto, Z. Jiang, I. Miotkowski, Y. P. Chen, A. Taleb-Ibrahimi, L. Perfetti, and M. Marsi, “Ultrafast surface carrier dynamics in the topological insulator Bi2Te3,” Nano Lett. 12(7), 3532–3536 (2012).
[Crossref] [PubMed]

J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. Tolk, I. Miotkowski, H. Cao, Y. Chen, Y. Wu, S. Qiao, and Z. Jiang, “Ultrafast carrier and phonon dynamics in Bi2Se3 crystals,” Appl. Phys. Lett. 97(18), 182102 (2010).
[Crossref]

Moisan, N.

M. Hajlaoui, E. Papalazarou, J. Mauchain, G. Lantz, N. Moisan, D. Boschetto, Z. Jiang, I. Miotkowski, Y. P. Chen, A. Taleb-Ibrahimi, L. Perfetti, and M. Marsi, “Ultrafast surface carrier dynamics in the topological insulator Bi2Te3,” Nano Lett. 12(7), 3532–3536 (2012).
[Crossref] [PubMed]

Murzina, T.

A. Bykov, T. Murzina, N. Olivier, G. Wurtz, and A. Zayats, “Coherent lattice dynamics in topological insulator Bi2Te3 probed with time-resolved optical second-harmonic generation,” Phys. Rev. B 92(6), 064305 (2015).
[Crossref]

Nair, S.

L. Cheng, C. La-o-vorakiat, C. Tang, S. Nair, B. Xia, L. Wang, J. Zhu, and E. Chia, “Temperature-dependent ultrafast carrier and phonon dynamics of topological insulator Bi1.5Sb0.5Te1.8Se1.2,” Appl. Phys. Lett. 104(21), 211906 (2014).
[Crossref]

Ni, Z.

J. Wang, L. Guo, C. Ling, Y. Song, X. Xu, Z. Ni, and Y. Chen, “Carrier dynamics in femtosecond-laser-excited bismuth telluride,” Phys. Rev. B 93(15), 155306 (2016).
[Crossref]

Nilsson, L.

C. Wang, X. Zhu, L. Nilsson, J. Wen, G. Wang, X. Shan, Q. Zhang, S. Zhang, J. Jia, and Q. Xue, “In situ Raman spectroscopy of topological insulator Bi2Te3 films with varying thickness,” Nano Res. 6(9), 688–692 (2013).
[Crossref]

Niu, Q.

Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
[Crossref]

Olivier, N.

A. Bykov, T. Murzina, N. Olivier, G. Wurtz, and A. Zayats, “Coherent lattice dynamics in topological insulator Bi2Te3 probed with time-resolved optical second-harmonic generation,” Phys. Rev. B 92(6), 064305 (2015).
[Crossref]

Paglione, J.

N. Kumar, B. Ruzicka, N. Butch, P. Syers, K. Kirshenbaum, J. Paglione, and H. Zhao, “Spatially resolved femtosecond pump-probe study of topological insulator Bi2Se3,” Phys. Rev. B 83(23), 235306 (2011).
[Crossref]

Papalazarou, E.

M. Hajlaoui, E. Papalazarou, J. Mauchain, G. Lantz, N. Moisan, D. Boschetto, Z. Jiang, I. Miotkowski, Y. P. Chen, A. Taleb-Ibrahimi, L. Perfetti, and M. Marsi, “Ultrafast surface carrier dynamics in the topological insulator Bi2Te3,” Nano Lett. 12(7), 3532–3536 (2012).
[Crossref] [PubMed]

Peng, H.

Y. Zhao, X. Luo, J. Zhang, J. Wu, X. Bai, M. Wang, J. Jia, H. Peng, Z. Liu, S. Quek, and Q. Xion, “Interlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies,” Phys. Rev. B 90(24), 245428 (2014).
[Crossref]

Perfetti, L.

M. Hajlaoui, E. Papalazarou, J. Mauchain, G. Lantz, N. Moisan, D. Boschetto, Z. Jiang, I. Miotkowski, Y. P. Chen, A. Taleb-Ibrahimi, L. Perfetti, and M. Marsi, “Ultrafast surface carrier dynamics in the topological insulator Bi2Te3,” Nano Lett. 12(7), 3532–3536 (2012).
[Crossref] [PubMed]

Pesin, D.

D. Pesin and A. H. MacDonald, “Spintronics and pseudospintronics in graphene and topological insulators,” Nat. Mater. 11(5), 409–416 (2012).
[Crossref] [PubMed]

Pierce, J.

Y. Wang, L. Guo, X. Xu, J. Pierce, and R. Venkatasubramanian, “Origin of coherent phonons in Bi2Te3 excited by ultrafast laser pulses,” Phys. Rev. B 88(6), 064307 (2013).
[Crossref]

Qi, J.

M. C. Wang, S. Qiao, Z. Jiang, S. N. Luo, and J. Qi, “Unraveling Photoinduced Spin Dynamics in the Topological Insulator Bi2Se3.,” Phys. Rev. Lett. 116(3), 036601 (2016).
[Crossref] [PubMed]

J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. Tolk, I. Miotkowski, H. Cao, Y. Chen, Y. Wu, S. Qiao, and Z. Jiang, “Ultrafast carrier and phonon dynamics in Bi2Se3 crystals,” Appl. Phys. Lett. 97(18), 182102 (2010).
[Crossref]

Qi, X.

Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
[Crossref]

Qiao, S.

M. C. Wang, S. Qiao, Z. Jiang, S. N. Luo, and J. Qi, “Unraveling Photoinduced Spin Dynamics in the Topological Insulator Bi2Se3.,” Phys. Rev. Lett. 116(3), 036601 (2016).
[Crossref] [PubMed]

J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. Tolk, I. Miotkowski, H. Cao, Y. Chen, Y. Wu, S. Qiao, and Z. Jiang, “Ultrafast carrier and phonon dynamics in Bi2Se3 crystals,” Appl. Phys. Lett. 97(18), 182102 (2010).
[Crossref]

Qin, H.

G. Zhang, H. Qin, J. Teng, J. Guo, Q. Guo, X. Dai, Z. Fang, and K. Wu, “Quintuple-layer epitaxy of thin films of topological insulator Bi2Se3,” Appl. Phys. Lett. 95(5), 053114 (2009).
[Crossref]

Quek, S.

Y. Zhao, X. Luo, J. Zhang, J. Wu, X. Bai, M. Wang, J. Jia, H. Peng, Z. Liu, S. Quek, and Q. Xion, “Interlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies,” Phys. Rev. B 90(24), 245428 (2014).
[Crossref]

Reis, D.

Y. Sheu, Y. Chien, C. Uher, S. Fahy, and D. Reis, “Free-carrier relaxation and lattice heating in photoexcited bismuth,” Phys. Rev. B 87(7), 075429 (2013).
[Crossref]

Reis, D. A.

J. J. Li, J. Chen, D. A. Reis, S. Fahy, and R. Merlin, “Optical Probing of Ultrafast Electronic Decay in Bi and Sb with Slow Phonons,” Phys. Rev. Lett. 110(4), 047401 (2013).
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Rode, A.

T. Garl, E. Gamaly, D. Boschetto, A. Rode, B. Luther-Davies, and A. Rousse, “Birth and decay of coherent optical phonons in femtosecond-laser-excited bismuth,” Phys. Rev. B 78(13), 134302 (2008).
[Crossref]

Rode, A. V.

D. Boschetto, E. G. Gamaly, A. V. Rode, B. Luther-Davies, D. Glijer, T. Garl, O. Albert, A. Rousse, and J. Etchepare, “Small Atomic Displacements Recorded in Bismuth by the Optical Reflectivity of Femtosecond Laser-Pulse Excitations,” Phys. Rev. Lett. 100(2), 027404 (2008).
[Crossref] [PubMed]

Rousse, A.

T. Garl, E. Gamaly, D. Boschetto, A. Rode, B. Luther-Davies, and A. Rousse, “Birth and decay of coherent optical phonons in femtosecond-laser-excited bismuth,” Phys. Rev. B 78(13), 134302 (2008).
[Crossref]

D. Boschetto, E. G. Gamaly, A. V. Rode, B. Luther-Davies, D. Glijer, T. Garl, O. Albert, A. Rousse, and J. Etchepare, “Small Atomic Displacements Recorded in Bismuth by the Optical Reflectivity of Femtosecond Laser-Pulse Excitations,” Phys. Rev. Lett. 100(2), 027404 (2008).
[Crossref] [PubMed]

Ruzicka, B.

N. Kumar, B. Ruzicka, N. Butch, P. Syers, K. Kirshenbaum, J. Paglione, and H. Zhao, “Spatially resolved femtosecond pump-probe study of topological insulator Bi2Se3,” Phys. Rev. B 83(23), 235306 (2011).
[Crossref]

Sankar, R.

H. Chen, K. Wu, C. Luo, T. Uen, J. Juang, J. Lin, T. Kobayashi, H. Yang, R. Sankar, F. Chou, H. Berger, and J. Liu, “Phonon dynamics in CuxBi2Se3 (x=0, 0.1, 0.125) and Bi2Se2 crystals studied using femtosecond spectroscopy,” Appl. Phys. Lett. 101(12), 3045 (2012).
[Crossref]

Shan, W.

Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
[Crossref]

Shan, X.

C. Wang, X. Zhu, L. Nilsson, J. Wen, G. Wang, X. Shan, Q. Zhang, S. Zhang, J. Jia, and Q. Xue, “In situ Raman spectroscopy of topological insulator Bi2Te3 films with varying thickness,” Nano Res. 6(9), 688–692 (2013).
[Crossref]

Shen, C.

K. Wei, X. Zheng, X. Cheng, C. Shen, and T. Jiang, “Observation of Ultrafast Exciton–Exciton Annihilation in CsPbBr3 Quantum Dots,” Adv. Opt. Mater. 4(12), 1993–1997 (2016).
[Crossref]

Shen, S.

Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
[Crossref]

Sheu, Y.

Y. Sheu, Y. Chien, C. Uher, S. Fahy, and D. Reis, “Free-carrier relaxation and lattice heating in photoexcited bismuth,” Phys. Rev. B 87(7), 075429 (2013).
[Crossref]

Shi, G.

Smirnov, D.

J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. Tolk, I. Miotkowski, H. Cao, Y. Chen, Y. Wu, S. Qiao, and Z. Jiang, “Ultrafast carrier and phonon dynamics in Bi2Se3 crystals,” Appl. Phys. Lett. 97(18), 182102 (2010).
[Crossref]

Someya, T.

S. Y. Maezawa, H. Watanabe, M. Takeda, K. Kuroda, T. Someya, I. Matsuda, and T. Suemoto, “Optically detecting the edge-state of a three-dimensional topological insulator under ambient conditions by ultrafast infrared photoluminescence spectroscopy,” Sci. Rep. 5(1), 16443 (2015).
[Crossref] [PubMed]

Song, C.

Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
[Crossref]

Song, Y.

J. Wang, L. Guo, C. Ling, Y. Song, X. Xu, Z. Ni, and Y. Chen, “Carrier dynamics in femtosecond-laser-excited bismuth telluride,” Phys. Rev. B 93(15), 155306 (2016).
[Crossref]

Song, Z.

Stoica, V.

Y. Li, V. Stoica, L. Endicott, G. Wang, C. Uher, and R. Clarke, “Coherent optical phonon spectroscopy of femtosecond-laser modified Sb2Te3 films,” Appl. Phys. Lett. 97(17), 171908 (2010).
[Crossref]

Suemoto, T.

S. Y. Maezawa, H. Watanabe, M. Takeda, K. Kuroda, T. Someya, I. Matsuda, and T. Suemoto, “Optically detecting the edge-state of a three-dimensional topological insulator under ambient conditions by ultrafast infrared photoluminescence spectroscopy,” Sci. Rep. 5(1), 16443 (2015).
[Crossref] [PubMed]

Syers, P.

N. Kumar, B. Ruzicka, N. Butch, P. Syers, K. Kirshenbaum, J. Paglione, and H. Zhao, “Spatially resolved femtosecond pump-probe study of topological insulator Bi2Se3,” Phys. Rev. B 83(23), 235306 (2011).
[Crossref]

Takeda, M.

S. Y. Maezawa, H. Watanabe, M. Takeda, K. Kuroda, T. Someya, I. Matsuda, and T. Suemoto, “Optically detecting the edge-state of a three-dimensional topological insulator under ambient conditions by ultrafast infrared photoluminescence spectroscopy,” Sci. Rep. 5(1), 16443 (2015).
[Crossref] [PubMed]

Taleb-Ibrahimi, A.

M. Hajlaoui, E. Papalazarou, J. Mauchain, G. Lantz, N. Moisan, D. Boschetto, Z. Jiang, I. Miotkowski, Y. P. Chen, A. Taleb-Ibrahimi, L. Perfetti, and M. Marsi, “Ultrafast surface carrier dynamics in the topological insulator Bi2Te3,” Nano Lett. 12(7), 3532–3536 (2012).
[Crossref] [PubMed]

Tang, C.

L. Cheng, C. La-o-vorakiat, C. Tang, S. Nair, B. Xia, L. Wang, J. Zhu, and E. Chia, “Temperature-dependent ultrafast carrier and phonon dynamics of topological insulator Bi1.5Sb0.5Te1.8Se1.2,” Appl. Phys. Lett. 104(21), 211906 (2014).
[Crossref]

Tang, J.

Y. Wang, F. Xiu, L. Cheng, L. He, M. Lang, J. Tang, X. Kou, X. Yu, X. Jiang, Z. Chen, J. Zou, and K. L. Wang, “Gate-controlled surface conduction in Na-doped Bi2Te3 topological insulator nanoplates,” Nano Lett. 12(3), 1170–1175 (2012).
[Crossref] [PubMed]

Teng, J.

G. Zhang, H. Qin, J. Teng, J. Guo, Q. Guo, X. Dai, Z. Fang, and K. Wu, “Quintuple-layer epitaxy of thin films of topological insulator Bi2Se3,” Appl. Phys. Lett. 95(5), 053114 (2009).
[Crossref]

Tolk, N.

J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. Tolk, I. Miotkowski, H. Cao, Y. Chen, Y. Wu, S. Qiao, and Z. Jiang, “Ultrafast carrier and phonon dynamics in Bi2Se3 crystals,” Appl. Phys. Lett. 97(18), 182102 (2010).
[Crossref]

Uen, T.

H. Chen, K. Wu, C. Luo, T. Uen, J. Juang, J. Lin, T. Kobayashi, H. Yang, R. Sankar, F. Chou, H. Berger, and J. Liu, “Phonon dynamics in CuxBi2Se3 (x=0, 0.1, 0.125) and Bi2Se2 crystals studied using femtosecond spectroscopy,” Appl. Phys. Lett. 101(12), 3045 (2012).
[Crossref]

Uher, C.

Y. Sheu, Y. Chien, C. Uher, S. Fahy, and D. Reis, “Free-carrier relaxation and lattice heating in photoexcited bismuth,” Phys. Rev. B 87(7), 075429 (2013).
[Crossref]

Y. Li, V. Stoica, L. Endicott, G. Wang, C. Uher, and R. Clarke, “Coherent optical phonon spectroscopy of femtosecond-laser modified Sb2Te3 films,” Appl. Phys. Lett. 97(17), 171908 (2010).
[Crossref]

Venkatasubramanian, R.

Y. Wang, L. Guo, X. Xu, J. Pierce, and R. Venkatasubramanian, “Origin of coherent phonons in Bi2Te3 excited by ultrafast laser pulses,” Phys. Rev. B 88(6), 064307 (2013).
[Crossref]

Y. Wang, X. Xu, and R. Venkatasubramanian, “Reduction in coherent phonon lifetime in Bi2Te3/Sb2Te3 superlattices,” Appl. Phys. Lett. 93(11), 1004 (2008).
[Crossref]

Wang, C.

C. Wang, X. Zhu, L. Nilsson, J. Wen, G. Wang, X. Shan, Q. Zhang, S. Zhang, J. Jia, and Q. Xue, “In situ Raman spectroscopy of topological insulator Bi2Te3 films with varying thickness,” Nano Res. 6(9), 688–692 (2013).
[Crossref]

Wang, G.

C. Wang, X. Zhu, L. Nilsson, J. Wen, G. Wang, X. Shan, Q. Zhang, S. Zhang, J. Jia, and Q. Xue, “In situ Raman spectroscopy of topological insulator Bi2Te3 films with varying thickness,” Nano Res. 6(9), 688–692 (2013).
[Crossref]

Y. Li, V. Stoica, L. Endicott, G. Wang, C. Uher, and R. Clarke, “Coherent optical phonon spectroscopy of femtosecond-laser modified Sb2Te3 films,” Appl. Phys. Lett. 97(17), 171908 (2010).
[Crossref]

Wang, J.

J. Wang, L. Guo, C. Ling, Y. Song, X. Xu, Z. Ni, and Y. Chen, “Carrier dynamics in femtosecond-laser-excited bismuth telluride,” Phys. Rev. B 93(15), 155306 (2016).
[Crossref]

Wang, K. L.

Y. Wang, F. Xiu, L. Cheng, L. He, M. Lang, J. Tang, X. Kou, X. Yu, X. Jiang, Z. Chen, J. Zou, and K. L. Wang, “Gate-controlled surface conduction in Na-doped Bi2Te3 topological insulator nanoplates,” Nano Lett. 12(3), 1170–1175 (2012).
[Crossref] [PubMed]

Wang, L.

L. Cheng, C. La-o-vorakiat, C. Tang, S. Nair, B. Xia, L. Wang, J. Zhu, and E. Chia, “Temperature-dependent ultrafast carrier and phonon dynamics of topological insulator Bi1.5Sb0.5Te1.8Se1.2,” Appl. Phys. Lett. 104(21), 211906 (2014).
[Crossref]

Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
[Crossref]

Wang, M.

Y. Zhao, X. Luo, J. Zhang, J. Wu, X. Bai, M. Wang, J. Jia, H. Peng, Z. Liu, S. Quek, and Q. Xion, “Interlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies,” Phys. Rev. B 90(24), 245428 (2014).
[Crossref]

Wang, M. C.

M. C. Wang, S. Qiao, Z. Jiang, S. N. Luo, and J. Qi, “Unraveling Photoinduced Spin Dynamics in the Topological Insulator Bi2Se3.,” Phys. Rev. Lett. 116(3), 036601 (2016).
[Crossref] [PubMed]

Wang, W.

S. Li, H. Huang, W. Zhu, W. Wang, K. Chen, D. Yao, Y. Wang, T. Lai, Y. Wu, and F. Gan, “Femtosecond laser-induced crystallization of amorphous Sb2Te3 film and coherent phonon spectroscopy characterization and optical injection of electron spins,” J. Appl. Phys. 110(5), 113114 (2011).
[Crossref]

Wang, Y.

Y. Wang, L. Guo, X. Xu, J. Pierce, and R. Venkatasubramanian, “Origin of coherent phonons in Bi2Te3 excited by ultrafast laser pulses,” Phys. Rev. B 88(6), 064307 (2013).
[Crossref]

Y. Wang, F. Xiu, L. Cheng, L. He, M. Lang, J. Tang, X. Kou, X. Yu, X. Jiang, Z. Chen, J. Zou, and K. L. Wang, “Gate-controlled surface conduction in Na-doped Bi2Te3 topological insulator nanoplates,” Nano Lett. 12(3), 1170–1175 (2012).
[Crossref] [PubMed]

S. Li, H. Huang, W. Zhu, W. Wang, K. Chen, D. Yao, Y. Wang, T. Lai, Y. Wu, and F. Gan, “Femtosecond laser-induced crystallization of amorphous Sb2Te3 film and coherent phonon spectroscopy characterization and optical injection of electron spins,” J. Appl. Phys. 110(5), 113114 (2011).
[Crossref]

Y. Wang, X. Xu, and R. Venkatasubramanian, “Reduction in coherent phonon lifetime in Bi2Te3/Sb2Te3 superlattices,” Appl. Phys. Lett. 93(11), 1004 (2008).
[Crossref]

Watanabe, H.

S. Y. Maezawa, H. Watanabe, M. Takeda, K. Kuroda, T. Someya, I. Matsuda, and T. Suemoto, “Optically detecting the edge-state of a three-dimensional topological insulator under ambient conditions by ultrafast infrared photoluminescence spectroscopy,” Sci. Rep. 5(1), 16443 (2015).
[Crossref] [PubMed]

Wei, K.

K. Wei, X. Zheng, X. Cheng, C. Shen, and T. Jiang, “Observation of Ultrafast Exciton–Exciton Annihilation in CsPbBr3 Quantum Dots,” Adv. Opt. Mater. 4(12), 1993–1997 (2016).
[Crossref]

Wen, J.

C. Wang, X. Zhu, L. Nilsson, J. Wen, G. Wang, X. Shan, Q. Zhang, S. Zhang, J. Jia, and Q. Xue, “In situ Raman spectroscopy of topological insulator Bi2Te3 films with varying thickness,” Nano Res. 6(9), 688–692 (2013).
[Crossref]

Wen, T.

Wu, J.

Y. Zhao, X. Luo, J. Zhang, J. Wu, X. Bai, M. Wang, J. Jia, H. Peng, Z. Liu, S. Quek, and Q. Xion, “Interlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies,” Phys. Rev. B 90(24), 245428 (2014).
[Crossref]

Wu, K.

P. Le, P. Liu, C. Luo, J. Lin, and K. Wu, “Thickness-dependent magnetotransport properties and terahertz response of topological insulator Bi2Te3 thin films,” J. Alloys Compd. 692, 972–979 (2017).
[Crossref]

Y. Lai, H. Chen, K. Wu, and J. Liu, “Temperature-dependent carrier–phonon coupling in topological insulator Bi2Se3,” Appl. Phys. Lett. 105(23), 232110 (2014).
[Crossref]

H. Chen, K. Wu, C. Luo, T. Uen, J. Juang, J. Lin, T. Kobayashi, H. Yang, R. Sankar, F. Chou, H. Berger, and J. Liu, “Phonon dynamics in CuxBi2Se3 (x=0, 0.1, 0.125) and Bi2Se2 crystals studied using femtosecond spectroscopy,” Appl. Phys. Lett. 101(12), 3045 (2012).
[Crossref]

G. Zhang, H. Qin, J. Teng, J. Guo, Q. Guo, X. Dai, Z. Fang, and K. Wu, “Quintuple-layer epitaxy of thin films of topological insulator Bi2Se3,” Appl. Phys. Lett. 95(5), 053114 (2009).
[Crossref]

Wu, Y.

S. Li, H. Huang, W. Zhu, W. Wang, K. Chen, D. Yao, Y. Wang, T. Lai, Y. Wu, and F. Gan, “Femtosecond laser-induced crystallization of amorphous Sb2Te3 film and coherent phonon spectroscopy characterization and optical injection of electron spins,” J. Appl. Phys. 110(5), 113114 (2011).
[Crossref]

J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. Tolk, I. Miotkowski, H. Cao, Y. Chen, Y. Wu, S. Qiao, and Z. Jiang, “Ultrafast carrier and phonon dynamics in Bi2Se3 crystals,” Appl. Phys. Lett. 97(18), 182102 (2010).
[Crossref]

Wurtz, G.

A. Bykov, T. Murzina, N. Olivier, G. Wurtz, and A. Zayats, “Coherent lattice dynamics in topological insulator Bi2Te3 probed with time-resolved optical second-harmonic generation,” Phys. Rev. B 92(6), 064305 (2015).
[Crossref]

Xia, B.

L. Cheng, C. La-o-vorakiat, C. Tang, S. Nair, B. Xia, L. Wang, J. Zhu, and E. Chia, “Temperature-dependent ultrafast carrier and phonon dynamics of topological insulator Bi1.5Sb0.5Te1.8Se1.2,” Appl. Phys. Lett. 104(21), 211906 (2014).
[Crossref]

Xion, Q.

Y. Zhao, X. Luo, J. Zhang, J. Wu, X. Bai, M. Wang, J. Jia, H. Peng, Z. Liu, S. Quek, and Q. Xion, “Interlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies,” Phys. Rev. B 90(24), 245428 (2014).
[Crossref]

Xiu, F.

Y. Wang, F. Xiu, L. Cheng, L. He, M. Lang, J. Tang, X. Kou, X. Yu, X. Jiang, Z. Chen, J. Zou, and K. L. Wang, “Gate-controlled surface conduction in Na-doped Bi2Te3 topological insulator nanoplates,” Nano Lett. 12(3), 1170–1175 (2012).
[Crossref] [PubMed]

Xu, X.

J. Wang, L. Guo, C. Ling, Y. Song, X. Xu, Z. Ni, and Y. Chen, “Carrier dynamics in femtosecond-laser-excited bismuth telluride,” Phys. Rev. B 93(15), 155306 (2016).
[Crossref]

Y. Wang, L. Guo, X. Xu, J. Pierce, and R. Venkatasubramanian, “Origin of coherent phonons in Bi2Te3 excited by ultrafast laser pulses,” Phys. Rev. B 88(6), 064307 (2013).
[Crossref]

Y. Wang, X. Xu, and R. Venkatasubramanian, “Reduction in coherent phonon lifetime in Bi2Te3/Sb2Te3 superlattices,” Appl. Phys. Lett. 93(11), 1004 (2008).
[Crossref]

Xu, Z.

Xue, Q.

C. Wang, X. Zhu, L. Nilsson, J. Wen, G. Wang, X. Shan, Q. Zhang, S. Zhang, J. Jia, and Q. Xue, “In situ Raman spectroscopy of topological insulator Bi2Te3 films with varying thickness,” Nano Res. 6(9), 688–692 (2013).
[Crossref]

Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
[Crossref]

Yang, H.

H. Chen, K. Wu, C. Luo, T. Uen, J. Juang, J. Lin, T. Kobayashi, H. Yang, R. Sankar, F. Chou, H. Berger, and J. Liu, “Phonon dynamics in CuxBi2Se3 (x=0, 0.1, 0.125) and Bi2Se2 crystals studied using femtosecond spectroscopy,” Appl. Phys. Lett. 101(12), 3045 (2012).
[Crossref]

Yao, D.

S. Li, H. Huang, W. Zhu, W. Wang, K. Chen, D. Yao, Y. Wang, T. Lai, Y. Wu, and F. Gan, “Femtosecond laser-induced crystallization of amorphous Sb2Te3 film and coherent phonon spectroscopy characterization and optical injection of electron spins,” J. Appl. Phys. 110(5), 113114 (2011).
[Crossref]

Yu, W.

J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. Tolk, I. Miotkowski, H. Cao, Y. Chen, Y. Wu, S. Qiao, and Z. Jiang, “Ultrafast carrier and phonon dynamics in Bi2Se3 crystals,” Appl. Phys. Lett. 97(18), 182102 (2010).
[Crossref]

Yu, X.

Y. Wang, F. Xiu, L. Cheng, L. He, M. Lang, J. Tang, X. Kou, X. Yu, X. Jiang, Z. Chen, J. Zou, and K. L. Wang, “Gate-controlled surface conduction in Na-doped Bi2Te3 topological insulator nanoplates,” Nano Lett. 12(3), 1170–1175 (2012).
[Crossref] [PubMed]

Zayats, A.

A. Bykov, T. Murzina, N. Olivier, G. Wurtz, and A. Zayats, “Coherent lattice dynamics in topological insulator Bi2Te3 probed with time-resolved optical second-harmonic generation,” Phys. Rev. B 92(6), 064305 (2015).
[Crossref]

Zhang, G.

G. Zhang, H. Qin, J. Teng, J. Guo, Q. Guo, X. Dai, Z. Fang, and K. Wu, “Quintuple-layer epitaxy of thin films of topological insulator Bi2Se3,” Appl. Phys. Lett. 95(5), 053114 (2009).
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X. Zheng, R. Chen, G. Shi, J. Zhang, Z. Xu, X. Cheng, and T. Jiang, “Characterization of nonlinear properties of black phosphorus nanoplatelets with femtosecond pulsed Z-scan measurements,” Opt. Lett. 40(15), 3480–3483 (2015).
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Y. Zhao, X. Luo, J. Zhang, J. Wu, X. Bai, M. Wang, J. Jia, H. Peng, Z. Liu, S. Quek, and Q. Xion, “Interlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies,” Phys. Rev. B 90(24), 245428 (2014).
[Crossref]

Zhang, Q.

C. Wang, X. Zhu, L. Nilsson, J. Wen, G. Wang, X. Shan, Q. Zhang, S. Zhang, J. Jia, and Q. Xue, “In situ Raman spectroscopy of topological insulator Bi2Te3 films with varying thickness,” Nano Res. 6(9), 688–692 (2013).
[Crossref]

Zhang, S.

C. Wang, X. Zhu, L. Nilsson, J. Wen, G. Wang, X. Shan, Q. Zhang, S. Zhang, J. Jia, and Q. Xue, “In situ Raman spectroscopy of topological insulator Bi2Te3 films with varying thickness,” Nano Res. 6(9), 688–692 (2013).
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Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
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Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
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N. Kumar, B. Ruzicka, N. Butch, P. Syers, K. Kirshenbaum, J. Paglione, and H. Zhao, “Spatially resolved femtosecond pump-probe study of topological insulator Bi2Se3,” Phys. Rev. B 83(23), 235306 (2011).
[Crossref]

Zhao, Y.

Y. Zhao, X. Luo, J. Zhang, J. Wu, X. Bai, M. Wang, J. Jia, H. Peng, Z. Liu, S. Quek, and Q. Xion, “Interlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies,” Phys. Rev. B 90(24), 245428 (2014).
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K. Wei, X. Zheng, X. Cheng, C. Shen, and T. Jiang, “Observation of Ultrafast Exciton–Exciton Annihilation in CsPbBr3 Quantum Dots,” Adv. Opt. Mater. 4(12), 1993–1997 (2016).
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X. Zheng, R. Chen, G. Shi, J. Zhang, Z. Xu, X. Cheng, and T. Jiang, “Characterization of nonlinear properties of black phosphorus nanoplatelets with femtosecond pulsed Z-scan measurements,” Opt. Lett. 40(15), 3480–3483 (2015).
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Zhou, D.

Zhu, J.

L. Cheng, C. La-o-vorakiat, C. Tang, S. Nair, B. Xia, L. Wang, J. Zhu, and E. Chia, “Temperature-dependent ultrafast carrier and phonon dynamics of topological insulator Bi1.5Sb0.5Te1.8Se1.2,” Appl. Phys. Lett. 104(21), 211906 (2014).
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S. Li, D. Zhou, T. Wen, W. Zhu, Z. Song, and T. Lai, “Femtosecond laser-irradiated crystallization of amorphous Si2Sb2Te3 films and its in-situ characterization by coherent phonon spectroscopy,” Opt. Express 21(8), 10222–10227 (2013).
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S. Li, H. Huang, W. Zhu, W. Wang, K. Chen, D. Yao, Y. Wang, T. Lai, Y. Wu, and F. Gan, “Femtosecond laser-induced crystallization of amorphous Sb2Te3 film and coherent phonon spectroscopy characterization and optical injection of electron spins,” J. Appl. Phys. 110(5), 113114 (2011).
[Crossref]

Zhu, X.

C. Wang, X. Zhu, L. Nilsson, J. Wen, G. Wang, X. Shan, Q. Zhang, S. Zhang, J. Jia, and Q. Xue, “In situ Raman spectroscopy of topological insulator Bi2Te3 films with varying thickness,” Nano Res. 6(9), 688–692 (2013).
[Crossref]

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Y. Wang, F. Xiu, L. Cheng, L. He, M. Lang, J. Tang, X. Kou, X. Yu, X. Jiang, Z. Chen, J. Zou, and K. L. Wang, “Gate-controlled surface conduction in Na-doped Bi2Te3 topological insulator nanoplates,” Nano Lett. 12(3), 1170–1175 (2012).
[Crossref] [PubMed]

Adv. Opt. Mater. (1)

K. Wei, X. Zheng, X. Cheng, C. Shen, and T. Jiang, “Observation of Ultrafast Exciton–Exciton Annihilation in CsPbBr3 Quantum Dots,” Adv. Opt. Mater. 4(12), 1993–1997 (2016).
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Appl. Phys. Lett. (7)

G. Zhang, H. Qin, J. Teng, J. Guo, Q. Guo, X. Dai, Z. Fang, and K. Wu, “Quintuple-layer epitaxy of thin films of topological insulator Bi2Se3,” Appl. Phys. Lett. 95(5), 053114 (2009).
[Crossref]

J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. Tolk, I. Miotkowski, H. Cao, Y. Chen, Y. Wu, S. Qiao, and Z. Jiang, “Ultrafast carrier and phonon dynamics in Bi2Se3 crystals,” Appl. Phys. Lett. 97(18), 182102 (2010).
[Crossref]

L. Cheng, C. La-o-vorakiat, C. Tang, S. Nair, B. Xia, L. Wang, J. Zhu, and E. Chia, “Temperature-dependent ultrafast carrier and phonon dynamics of topological insulator Bi1.5Sb0.5Te1.8Se1.2,” Appl. Phys. Lett. 104(21), 211906 (2014).
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Y. Lai, H. Chen, K. Wu, and J. Liu, “Temperature-dependent carrier–phonon coupling in topological insulator Bi2Se3,” Appl. Phys. Lett. 105(23), 232110 (2014).
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P. Le, P. Liu, C. Luo, J. Lin, and K. Wu, “Thickness-dependent magnetotransport properties and terahertz response of topological insulator Bi2Te3 thin films,” J. Alloys Compd. 692, 972–979 (2017).
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S. Li, H. Huang, W. Zhu, W. Wang, K. Chen, D. Yao, Y. Wang, T. Lai, Y. Wu, and F. Gan, “Femtosecond laser-induced crystallization of amorphous Sb2Te3 film and coherent phonon spectroscopy characterization and optical injection of electron spins,” J. Appl. Phys. 110(5), 113114 (2011).
[Crossref]

Nano Lett. (2)

M. Hajlaoui, E. Papalazarou, J. Mauchain, G. Lantz, N. Moisan, D. Boschetto, Z. Jiang, I. Miotkowski, Y. P. Chen, A. Taleb-Ibrahimi, L. Perfetti, and M. Marsi, “Ultrafast surface carrier dynamics in the topological insulator Bi2Te3,” Nano Lett. 12(7), 3532–3536 (2012).
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Y. Wang, F. Xiu, L. Cheng, L. He, M. Lang, J. Tang, X. Kou, X. Yu, X. Jiang, Z. Chen, J. Zou, and K. L. Wang, “Gate-controlled surface conduction in Na-doped Bi2Te3 topological insulator nanoplates,” Nano Lett. 12(3), 1170–1175 (2012).
[Crossref] [PubMed]

Nano Res. (1)

C. Wang, X. Zhu, L. Nilsson, J. Wen, G. Wang, X. Shan, Q. Zhang, S. Zhang, J. Jia, and Q. Xue, “In situ Raman spectroscopy of topological insulator Bi2Te3 films with varying thickness,” Nano Res. 6(9), 688–692 (2013).
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Nat. Mater. (1)

D. Pesin and A. H. MacDonald, “Spintronics and pseudospintronics in graphene and topological insulators,” Nat. Mater. 11(5), 409–416 (2012).
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Nat. Phys. (1)

Y. Zhang, K. He, C. Chang, C. Song, L. Wang, X. Chen, J. Jia, Z. Fang, X. Dai, W. Shan, S. Shen, Q. Niu, X. Qi, S. Zhang, X. Ma, and Q. Xue, “Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit,” Nat. Phys. 6(8), 712 (2010).
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Opt. Express (1)

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Phys. Rev. B (7)

Y. Zhao, X. Luo, J. Zhang, J. Wu, X. Bai, M. Wang, J. Jia, H. Peng, Z. Liu, S. Quek, and Q. Xion, “Interlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies,” Phys. Rev. B 90(24), 245428 (2014).
[Crossref]

A. Bykov, T. Murzina, N. Olivier, G. Wurtz, and A. Zayats, “Coherent lattice dynamics in topological insulator Bi2Te3 probed with time-resolved optical second-harmonic generation,” Phys. Rev. B 92(6), 064305 (2015).
[Crossref]

N. Kumar, B. Ruzicka, N. Butch, P. Syers, K. Kirshenbaum, J. Paglione, and H. Zhao, “Spatially resolved femtosecond pump-probe study of topological insulator Bi2Se3,” Phys. Rev. B 83(23), 235306 (2011).
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Figures (7)

Fig. 1
Fig. 1 (a) RHEED patterns of a Bi2Te3 film. (b) AFM image of a Bi2Te3 film (500 nm × 500 nm). (c) The line profile along the red line in (b).
Fig. 2
Fig. 2 The Raman spectra of samples with different thickness. Three peaks characterizing A 1 g 1 , E g and A 1 g 2 coherent optical phonon modes respectively.
Fig. 3
Fig. 3 (a)The transient absorbance change of the 20 QL Bi2Te3 film in the long-time range of 0-60 ps showing the carrier behavior of the sample. The red dots represent the experiment data, while the blue line is the fitting curve. (b) Transient absorbance change of 20 QL Bi2Te3 film in the short time scale of 0-15 ps.
Fig. 4
Fig. 4 The black line presents the thickness dependence of electron-hole recombination time. The blue line and red line exhibit the thickness dependence of initial amplitude of electron-hole recombination and electron-lattice interaction process respectively.
Fig. 5
Fig. 5 The transient absorbance change of Bi2Te3 films with different thickness shown in short-time range of 0-15 ps.
Fig. 6
Fig. 6 The extracted high-frequency signals induced by coherent optical phonons. The red dashed box shows the obvious period change of the oscillation signals.
Fig. 7
Fig. 7 (a) The FFT spectrum of the COP induced oscillations in 6 QL film. The red dash line indicates the 1.88 THz phonon mode observed in Raman spectra. (b)The short-time Fourier transformation results of the signals of 6 QL Bi2Te3.

Tables (1)

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Table 1 Characteristic figures of the fitting signal of 20 QL films

Equations (4)

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f = C e e t / τ e + C l e t / τ l + C s e t / τ s + C a e - t / τ a cos ( ( Ω a t + β a ) t + f a )
Δ p t V = V U b u l k Δ p S U s u r f Δ p
Δ p t = ( U b u l k + U s u r f d ) Δ p
τ = 1 ( U b u l k + U s u r f / d ) = d ( U b u l k d + U s u r f )

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