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

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung


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.

Seiten (von - bis)1927-1933
FachzeitschriftJournal of Physical Chemistry Letters
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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