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

*Korrespondierende/r Autor/in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikel

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.

Originalspracheenglisch
Seiten (von - bis)1927-1933
Seitenumfang7
FachzeitschriftJournal of Physical Chemistry Letters
Jahrgang11
Ausgabenummer5
DOIs
PublikationsstatusVeröffentlicht - 7 Feb 2020

ASJC Scopus subject areas

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

Fields of Expertise

  • Advanced Materials Science

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