Ultrafast Measurements of Mode-Specific Deformation Potentials of Bi2Te3 and Bi2Se3

Yijing Huang; José D. Querales-Flores; Samuel W. Teitelbaum; Jiang Cao; Thomas Henighan; Hanzhe Liu; Mason Jiang; Gilberto De La Peña; Viktor Krapivin; Johann Haber; Takahiro Sato; Matthieu Chollet; Diling Zhu; Tetsuo Katayama; Robert Power; Meabh Allen; Costel R. Rotundu; Trevor P. Bailey; Ctirad Uher; Mariano Trigo; Patrick S. Kirchmann; Éamonn D. Murray; Zhi Xun Shen; Ivana Savić; Stephen Fahy; Jonathan A. Sobota; David A. Reis

doi:10.1103/PhysRevX.13.041050

Ultrafast Measurements of Mode-Specific Deformation Potentials of Bi2Te3 and Bi2Se3

Yijing Huang, José D. Querales-Flores, Samuel W. Teitelbaum, Jiang Cao, Thomas Henighan, Hanzhe Liu, Mason Jiang, Gilberto De La Peña, Viktor Krapivin, Johann Haber, Takahiro Sato, Matthieu Chollet, Diling Zhu, Tetsuo Katayama, Robert Power, Meabh Allen, Costel R. Rotundu, Trevor P. Bailey, Ctirad Uher, Mariano TrigoPatrick S. Kirchmann, Éamonn D. Murray, Zhi Xun Shen, Ivana Savić, Stephen Fahy, Jonathan A. Sobota, David A. Reis

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2 Scopus citations

Abstract

Quantifying electron-phonon interactions for the surface states of topological materials can provide key insights into surface-state transport, topological superconductivity, and potentially how to manipulate the surface state using a structural degree of freedom. We perform time-resolved x-ray diffraction (XRD) and angle-resolved photoemission (ARPES) measurements on Bi2Te3 and Bi2Se3, following the excitation of coherent A1g optical phonons. We extract and compare the deformation potentials coupling the surface electronic states to local A1g-like displacements in these two materials using the experimentally determined atomic displacements from XRD and electron band shifts from ARPES. We find the coupling in Bi2Te3 and Bi2Se3 to be similar and in general in agreement with expectations from density functional theory. We establish a methodology that quantifies the mode-specific electron-phonon coupling experimentally, allowing detailed comparison to theory. Our results shed light on fundamental processes in topological insulators involving electron-phonon coupling.

Original language	English (US)
Article number	041050
Journal	Physical Review X
Volume	13
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevX.13.041050
State	Published - Oct 2023
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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Huang, Y., Querales-Flores, J. D., Teitelbaum, S. W., Cao, J., Henighan, T., Liu, H., Jiang, M., De La Peña, G., Krapivin, V., Haber, J., Sato, T., Chollet, M., Zhu, D., Katayama, T., Power, R., Allen, M., Rotundu, C. R., Bailey, T. P., Uher, C., ... Reis, D. A. (2023). Ultrafast Measurements of Mode-Specific Deformation Potentials of Bi2Te3 and Bi2Se3. Physical Review X, 13(4), Article 041050. https://doi.org/10.1103/PhysRevX.13.041050

Huang, Y, Querales-Flores, JD, Teitelbaum, SW, Cao, J, Henighan, T, Liu, H, Jiang, M, De La Peña, G, Krapivin, V, Haber, J, Sato, T, Chollet, M, Zhu, D, Katayama, T, Power, R, Allen, M, Rotundu, CR, Bailey, TP, Uher, C, Trigo, M, Kirchmann, PS, Murray, ÉD, Shen, ZX, Savić, I, Fahy, S, Sobota, JA & Reis, DA 2023, 'Ultrafast Measurements of Mode-Specific Deformation Potentials of Bi2Te3 and Bi2Se3', Physical Review X, vol. 13, no. 4, 041050. https://doi.org/10.1103/PhysRevX.13.041050

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title = "Ultrafast Measurements of Mode-Specific Deformation Potentials of Bi2Te3 and Bi2Se3",

abstract = "Quantifying electron-phonon interactions for the surface states of topological materials can provide key insights into surface-state transport, topological superconductivity, and potentially how to manipulate the surface state using a structural degree of freedom. We perform time-resolved x-ray diffraction (XRD) and angle-resolved photoemission (ARPES) measurements on Bi2Te3 and Bi2Se3, following the excitation of coherent A1g optical phonons. We extract and compare the deformation potentials coupling the surface electronic states to local A1g-like displacements in these two materials using the experimentally determined atomic displacements from XRD and electron band shifts from ARPES. We find the coupling in Bi2Te3 and Bi2Se3 to be similar and in general in agreement with expectations from density functional theory. We establish a methodology that quantifies the mode-specific electron-phonon coupling experimentally, allowing detailed comparison to theory. Our results shed light on fundamental processes in topological insulators involving electron-phonon coupling.",

author = "Yijing Huang and Querales-Flores, {Jos{\'e} D.} and Teitelbaum, {Samuel W.} and Jiang Cao and Thomas Henighan and Hanzhe Liu and Mason Jiang and {De La Pe{\~n}a}, Gilberto and Viktor Krapivin and Johann Haber and Takahiro Sato and Matthieu Chollet and Diling Zhu and Tetsuo Katayama and Robert Power and Meabh Allen and Rotundu, {Costel R.} and Bailey, {Trevor P.} and Ctirad Uher and Mariano Trigo and Kirchmann, {Patrick S.} and Murray, {{\'E}amonn D.} and Shen, {Zhi Xun} and Ivana Savi{\'c} and Stephen Fahy and Sobota, {Jonathan A.} and Reis, {David A.}",

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doi = "10.1103/PhysRevX.13.041050",

language = "English (US)",

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AU - Huang, Yijing

AU - Querales-Flores, José D.

AU - Teitelbaum, Samuel W.

AU - Cao, Jiang

AU - Henighan, Thomas

AU - Liu, Hanzhe

AU - Jiang, Mason

AU - De La Peña, Gilberto

AU - Krapivin, Viktor

AU - Haber, Johann

AU - Sato, Takahiro

AU - Chollet, Matthieu

AU - Zhu, Diling

AU - Katayama, Tetsuo

AU - Power, Robert

AU - Allen, Meabh

AU - Rotundu, Costel R.

AU - Bailey, Trevor P.

AU - Uher, Ctirad

AU - Trigo, Mariano

AU - Kirchmann, Patrick S.

AU - Murray, Éamonn D.

AU - Shen, Zhi Xun

AU - Savić, Ivana

AU - Fahy, Stephen

AU - Sobota, Jonathan A.

AU - Reis, David A.

N1 - Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

PY - 2023/10

Y1 - 2023/10

N2 - Quantifying electron-phonon interactions for the surface states of topological materials can provide key insights into surface-state transport, topological superconductivity, and potentially how to manipulate the surface state using a structural degree of freedom. We perform time-resolved x-ray diffraction (XRD) and angle-resolved photoemission (ARPES) measurements on Bi2Te3 and Bi2Se3, following the excitation of coherent A1g optical phonons. We extract and compare the deformation potentials coupling the surface electronic states to local A1g-like displacements in these two materials using the experimentally determined atomic displacements from XRD and electron band shifts from ARPES. We find the coupling in Bi2Te3 and Bi2Se3 to be similar and in general in agreement with expectations from density functional theory. We establish a methodology that quantifies the mode-specific electron-phonon coupling experimentally, allowing detailed comparison to theory. Our results shed light on fundamental processes in topological insulators involving electron-phonon coupling.

AB - Quantifying electron-phonon interactions for the surface states of topological materials can provide key insights into surface-state transport, topological superconductivity, and potentially how to manipulate the surface state using a structural degree of freedom. We perform time-resolved x-ray diffraction (XRD) and angle-resolved photoemission (ARPES) measurements on Bi2Te3 and Bi2Se3, following the excitation of coherent A1g optical phonons. We extract and compare the deformation potentials coupling the surface electronic states to local A1g-like displacements in these two materials using the experimentally determined atomic displacements from XRD and electron band shifts from ARPES. We find the coupling in Bi2Te3 and Bi2Se3 to be similar and in general in agreement with expectations from density functional theory. We establish a methodology that quantifies the mode-specific electron-phonon coupling experimentally, allowing detailed comparison to theory. Our results shed light on fundamental processes in topological insulators involving electron-phonon coupling.

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ER -

Ultrafast Measurements of Mode-Specific Deformation Potentials of Bi2Te3 and Bi2Se3

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