SurfaceScience21 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 96: Poster Session VII: Poster to Mini-Symposium: Frontiers of electronic-structure theory IV
O 96.4: Poster
Donnerstag, 4. März 2021, 10:30–12:30, P
The electron-phonon scenario of superconductivity of LiBi — •Sylwia Gutowska1, Bartłomiej Wiendlocha1, Karolina Górnicka2, Michał Winiarski2, Weiwei Xie3, Robert J. Cava4, and Tomasz Klimczuk2 — 1AGH University of Science and Technology in Krakow, Poland — 2Faculty of Applied Physics and Mathematics, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233 Gdańsk, Poland — 3Department of Chemistry, Louisiana State University, Baton Rouge Louisiana 70803, United States — 4Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
The electron-phonon interaction scenario of superconductivity is investigated in case of LiBi, which is a compound made of the lightest and the heaviest elemental metal and which hosts the tetragonal structure with squared sublattices of Bi, unusual for Bi-based compounds, that prefer the hexagonal type of sublattices due to the 3 valence electrons of 6p nature of bismuth. Such a simple structure is a perfect candidate for an investigation in details of the influence of the electronic as well as the phonon structure on the electron-phonon interaction and the superconductivity. After that, we compare the results in terms of electron-phonon coefficient and critical temperature to the experimental values. We also study the isotope effect and the influence of external pressure on the structure and superconductivity of this compound.