Origin of the Electron-Phonon Interaction of Topological Semimetal Surfaces Measured with Helium Atom Scattering

Giorgio Benedek; Salvador Miret-Artés; J. R. Manson; Adrian Ruckhofer; Wolfgang E. Ernst; Anton Tamtögl

doi:10.1021/acs.jpclett.9b03829

Origin of the Electron-Phonon Interaction of Topological Semimetal Surfaces Measured with Helium Atom Scattering

Giorgio Benedek, Salvador Miret-Artés^*, J. R. Manson, Adrian Ruckhofer, Wolfgang E. Ernst, Anton Tamtögl

^*Corresponding author for this work

Institute of Experimental Physics (5110)

Research output: Contribution to journal › Article › peer-review

Abstract

He atom scattering has been demonstrated to be a sensitive probe of the electron-phonon interaction parameter λ at metal and metal-overlayer surfaces. Here it is shown that the theory linking λ to the thermal attenuation of atom scattering spectra (the Debye-Waller factor) can be applied to topological semimetal surfaces, such as the quasi-one-dimensional charge-density-wave system Bi(114) and the layered pnictogen chalcogenides. The electron-phonon coupling, as determined for several topological insulators belonging to the class of bismuth chalcogenides, suggests a dominant contribution of the surface quantum well states over the Dirac electrons in terms of λ.

Original language	English
Pages (from-to)	1927-1933
Number of pages	7
Journal	Journal of Physical Chemistry Letters
Volume	11
Issue number	5
DOIs	https://doi.org/10.1021/acs.jpclett.9b03829
Publication status	Published - 7 Feb 2020

Keywords

Electron-phonon coupling
Topological insulator
Atom scattering
Surface analysis
Debye-Waller factor

ASJC Scopus subject areas

Materials Science(all)
Physical and Theoretical Chemistry
Surfaces and Interfaces

Fields of Expertise

Advanced Materials Science

Cooperations

NAWI Graz

Access to Document

10.1021/acs.jpclett.9b03829Licence: CC BY 4.0

Cite this

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title = "Origin of the Electron-Phonon Interaction of Topological Semimetal Surfaces Measured with Helium Atom Scattering",

abstract = "He atom scattering has been demonstrated to be a sensitive probe of the electron-phonon interaction parameter λ at metal and metal-overlayer surfaces. Here it is shown that the theory linking λ to the thermal attenuation of atom scattering spectra (the Debye-Waller factor) can be applied to topological semimetal surfaces, such as the quasi-one-dimensional charge-density-wave system Bi(114) and the layered pnictogen chalcogenides. The electron-phonon coupling, as determined for several topological insulators belonging to the class of bismuth chalcogenides, suggests a dominant contribution of the surface quantum well states over the Dirac electrons in terms of λ.",

keywords = "Electron-phonon coupling, Topological insulator, Atom scattering, Surface analysis, Debye-Waller factor",

author = "Giorgio Benedek and Salvador Miret-Art{\'e}s and Manson, {J. R.} and Adrian Ruckhofer and Ernst, {Wolfgang E.} and Anton Tamt{\"o}gl",

year = "2020",

month = feb,

day = "7",

doi = "10.1021/acs.jpclett.9b03829",

language = "English",

volume = "11",

pages = "1927--1933",

journal = "Journal of Physical Chemistry Letters",

issn = "1948-7185",

publisher = "American Chemical Society",

number = "5",

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T1 - Origin of the Electron-Phonon Interaction of Topological Semimetal Surfaces Measured with Helium Atom Scattering

AU - Benedek, Giorgio

AU - Miret-Artés, Salvador

AU - Manson, J. R.

AU - Ruckhofer, Adrian

AU - Ernst, Wolfgang E.

AU - Tamtögl, Anton

PY - 2020/2/7

Y1 - 2020/2/7

N2 - He atom scattering has been demonstrated to be a sensitive probe of the electron-phonon interaction parameter λ at metal and metal-overlayer surfaces. Here it is shown that the theory linking λ to the thermal attenuation of atom scattering spectra (the Debye-Waller factor) can be applied to topological semimetal surfaces, such as the quasi-one-dimensional charge-density-wave system Bi(114) and the layered pnictogen chalcogenides. The electron-phonon coupling, as determined for several topological insulators belonging to the class of bismuth chalcogenides, suggests a dominant contribution of the surface quantum well states over the Dirac electrons in terms of λ.

AB - He atom scattering has been demonstrated to be a sensitive probe of the electron-phonon interaction parameter λ at metal and metal-overlayer surfaces. Here it is shown that the theory linking λ to the thermal attenuation of atom scattering spectra (the Debye-Waller factor) can be applied to topological semimetal surfaces, such as the quasi-one-dimensional charge-density-wave system Bi(114) and the layered pnictogen chalcogenides. The electron-phonon coupling, as determined for several topological insulators belonging to the class of bismuth chalcogenides, suggests a dominant contribution of the surface quantum well states over the Dirac electrons in terms of λ.

KW - Electron-phonon coupling

KW - Topological insulator

KW - Atom scattering

KW - Surface analysis

KW - Debye-Waller factor

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U2 - 10.1021/acs.jpclett.9b03829

DO - 10.1021/acs.jpclett.9b03829

M3 - Article

AN - SCOPUS:85080140406

SN - 1948-7185

VL - 11

SP - 1927

EP - 1933

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

IS - 5

ER -

Origin of the Electron-Phonon Interaction of Topological Semimetal Surfaces Measured with Helium Atom Scattering

Abstract

Keywords

ASJC Scopus subject areas

Fields of Expertise

Cooperations

Access to Document

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FWF - Material Dynamic - Surface dynamics of topological materials

Cite this

Origin of the Electron-Phonon Interaction of Topological Semimetal Surfaces Measured with Helium Atom Scattering

Abstract

Keywords

ASJC Scopus subject areas

Fields of Expertise

Cooperations

Access to Document

Other files and links

Projects

FWF - Material Dynamic - Surface dynamics of topological materials

Cite this