Regensburg 2019 – scientific programme
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O: Fachverband Oberflächenphysik
O 58: Focus Session: Electron-Phonon Interactions II
O 58.8: Talk
Wednesday, April 3, 2019, 17:00–17:15, H15
Efficient calculation electron-phonon related problems thought Helmholtz Fermi Surface harmonics (HFSH). — •Jon Lafuente-Bartolome1,2, Idoia G. Gurtubay1,2, and Asier Eiguren1,2 — 1Condensed Matter Physics Dept. Uni. Basque Country (UPV/EHU), Spain — 2Donostia International Physics Center (DIPC), San Sebastian, Spain
In a metals, the details ls of the Fermi surface and the magnitude of the matrix elements connecting different points defined on it determine most of the transport properties, which are limited by the electron-phonon coupling and the scattering by impurities. While typically the calculation of an anisotropic Fermi surface realted physical property requires the consideration several thousand points on the surface, say in an impurity or Boltzmann transport problem, the Helmholtz Fermi Surface harmonics (HFSH) technique allows us to accurately treat these problems considering few elements of the HFSH set. Here we introduce the recent developments in this direction, including the symmetry treatment and derived selection rules, and a representative benchmarking list of examples illustrating the potential of this method.