Drude weight in presence of nonlocal potentials
Materials Science
2023-12-25 v1
Abstract
The nonlocal potential contributes an extra term to the velocity operator; I show here that such term affects the formal expression of the Drude weight in a nontrivial way. Notably, the present main result fixes a disturbing discrepancy in the Dreyer-Coh-Stengel sum rule [Phys. Rev. Lett. {\bf 128}, 095901 (2022)].
Cite
@article{arxiv.2312.14178,
title = {Drude weight in presence of nonlocal potentials},
author = {Raffaele Resta},
journal= {arXiv preprint arXiv:2312.14178},
year = {2023}
}
Comments
2 pages. Transparent derivation of the Drude-weight formula