Electron-phonon coupling and surface Debye temperature of Bi2Te3(111) from helium atom scattering

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Electron-phonon coupling and surface Debye temperature of Bi2Te3(111) from helium atom scattering. / Tamtogl, Anton; Kraus, Patrick; Avidor, Nadav; Bremholm, Martin; Hedegaard, Ellen M. J.; Iversen, Bo B.; Bianchi, Marco; Hofmann, Philip; Ellis, John; Allison, William; Benedek, Giorgio; Ernst, Wolfgang E.

I: Physical Review B, Bind 95, Nr. 19, 195401, 04.05.2017.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Tamtogl, A, Kraus, P, Avidor, N, Bremholm, M, Hedegaard, EMJ, Iversen, BB, Bianchi, M, Hofmann, P, Ellis, J, Allison, W, Benedek, G & Ernst, WE 2017, 'Electron-phonon coupling and surface Debye temperature of Bi2Te3(111) from helium atom scattering', Physical Review B, bind 95, nr. 19, 195401. https://doi.org/10.1103/PhysRevB.95.195401

APA

Tamtogl, A., Kraus, P., Avidor, N., Bremholm, M., Hedegaard, E. M. J., Iversen, B. B., ... Ernst, W. E. (2017). Electron-phonon coupling and surface Debye temperature of Bi2Te3(111) from helium atom scattering. Physical Review B, 95(19), [195401]. https://doi.org/10.1103/PhysRevB.95.195401

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MLA

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Author

Tamtogl, Anton ; Kraus, Patrick ; Avidor, Nadav ; Bremholm, Martin ; Hedegaard, Ellen M. J. ; Iversen, Bo B. ; Bianchi, Marco ; Hofmann, Philip ; Ellis, John ; Allison, William ; Benedek, Giorgio ; Ernst, Wolfgang E. / Electron-phonon coupling and surface Debye temperature of Bi2Te3(111) from helium atom scattering. I: Physical Review B. 2017 ; Bind 95, Nr. 19.

Bibtex

@article{4a05e4369ff14b5e95f8445eaced219f,
title = "Electron-phonon coupling and surface Debye temperature of Bi2Te3(111) from helium atom scattering",
abstract = "We have studied the topological insulator Bi2Te3(111) by means of helium atom scattering. The average electron-phonon coupling lambda of Bi2Te3(111) is determined by adapting a recently developed quantum-theoretical derivation of the helium scattering probabilities to the case of degenerate semiconductors. Based on the Debye-Waller attenuation of the elastic diffraction peaks of Bi2Te3(111), measured at surface temperatures between 110 and 355 K, we find lambda to be in the range of 0.04-0.11. This method allows us to extract a correctly averaged. and to address the discrepancy between previous studies. The relatively modest value of. is not surprising even though some individual phonons may provide a larger electron-phonon interaction. Furthermore, the surface Debye temperature of Bi2Te3(111) is determined as Theta(D) = (81 +/- 6) K. The electronic surface corrugation was analyzed based on close-coupling calculations. By using a corrugated Morse potential a peak-to-peak corrugation of 9{\%} of the lattice constant is obtained.",
keywords = "WALLER FACTOR, TOPOLOGICAL INSULATORS, BISMUTH TELLURIDE, GAAS(110) SURFACE, METAL-SURFACES, DIFFRACTION, POTENTIALS, GENERATION, TRANSPORT, DYNAMICS",
author = "Anton Tamtogl and Patrick Kraus and Nadav Avidor and Martin Bremholm and Hedegaard, {Ellen M. J.} and Iversen, {Bo B.} and Marco Bianchi and Philip Hofmann and John Ellis and William Allison and Giorgio Benedek and Ernst, {Wolfgang E.}",
year = "2017",
month = "5",
day = "4",
doi = "10.1103/PhysRevB.95.195401",
language = "English",
volume = "95",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "american physical society",
number = "19",

}

RIS

TY - JOUR

T1 - Electron-phonon coupling and surface Debye temperature of Bi2Te3(111) from helium atom scattering

AU - Tamtogl, Anton

AU - Kraus, Patrick

AU - Avidor, Nadav

AU - Bremholm, Martin

AU - Hedegaard, Ellen M. J.

AU - Iversen, Bo B.

AU - Bianchi, Marco

AU - Hofmann, Philip

AU - Ellis, John

AU - Allison, William

AU - Benedek, Giorgio

AU - Ernst, Wolfgang E.

PY - 2017/5/4

Y1 - 2017/5/4

N2 - We have studied the topological insulator Bi2Te3(111) by means of helium atom scattering. The average electron-phonon coupling lambda of Bi2Te3(111) is determined by adapting a recently developed quantum-theoretical derivation of the helium scattering probabilities to the case of degenerate semiconductors. Based on the Debye-Waller attenuation of the elastic diffraction peaks of Bi2Te3(111), measured at surface temperatures between 110 and 355 K, we find lambda to be in the range of 0.04-0.11. This method allows us to extract a correctly averaged. and to address the discrepancy between previous studies. The relatively modest value of. is not surprising even though some individual phonons may provide a larger electron-phonon interaction. Furthermore, the surface Debye temperature of Bi2Te3(111) is determined as Theta(D) = (81 +/- 6) K. The electronic surface corrugation was analyzed based on close-coupling calculations. By using a corrugated Morse potential a peak-to-peak corrugation of 9% of the lattice constant is obtained.

AB - We have studied the topological insulator Bi2Te3(111) by means of helium atom scattering. The average electron-phonon coupling lambda of Bi2Te3(111) is determined by adapting a recently developed quantum-theoretical derivation of the helium scattering probabilities to the case of degenerate semiconductors. Based on the Debye-Waller attenuation of the elastic diffraction peaks of Bi2Te3(111), measured at surface temperatures between 110 and 355 K, we find lambda to be in the range of 0.04-0.11. This method allows us to extract a correctly averaged. and to address the discrepancy between previous studies. The relatively modest value of. is not surprising even though some individual phonons may provide a larger electron-phonon interaction. Furthermore, the surface Debye temperature of Bi2Te3(111) is determined as Theta(D) = (81 +/- 6) K. The electronic surface corrugation was analyzed based on close-coupling calculations. By using a corrugated Morse potential a peak-to-peak corrugation of 9% of the lattice constant is obtained.

KW - WALLER FACTOR

KW - TOPOLOGICAL INSULATORS

KW - BISMUTH TELLURIDE

KW - GAAS(110) SURFACE

KW - METAL-SURFACES

KW - DIFFRACTION

KW - POTENTIALS

KW - GENERATION

KW - TRANSPORT

KW - DYNAMICS

U2 - 10.1103/PhysRevB.95.195401

DO - 10.1103/PhysRevB.95.195401

M3 - Journal article

VL - 95

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 19

M1 - 195401

ER -