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Robustness of electronic screening effects in electron spectroscopies: example of VO
Vitaly Gorelov, Lucia Reining, Walter R. L. Lambrecht +1
In bulk and low-dimensional extended systems, the screening of excitations by the electron cloud is a key feature governing spectroscopic properties. Widely used computational appr…
Accurate Kohn-Sham auxiliary system from the ground state density of solids
Ayoub Aouina, Matteo Gatti, Siyuan Chen +2
The Kohn-Sham (KS) system is an auxiliary system whose effective potential is unknown in most cases. It is in principle determined by the ground state density, and it has been foun…
Delocalization of dark and bright excitons in flat-band materials and the optical properties of VO
Vitaly Gorelov, Lucia Reining, Martin Feneberg +4
The simplest picture of excitons in materials with atomic-like localization of electrons is that of Frenkel excitons, where electrons and holes stay close together, which is associ…