Electroneutrality and the Friedel sum rule in a Luttinger liquid
强关联电子
2009-10-30 v1
摘要
Screening in one-dimensional metals is studied for arbitrary electron-electron interactions. It is shown that for finite-range interactions (Luttinger liquid) electroneutrality is violated. This apparent inconsistency can be traced to the presence of external screening gates responsible for the effectively short-ranged Coulomb interactions. We also draw attention to the breakdown of linear screening for wavevectors close to 2 K_f.
引用
@article{arxiv.cond-mat/9709047,
title = {Electroneutrality and the Friedel sum rule in a Luttinger liquid},
author = {Reinhold Egger and Hermann Grabert},
journal= {arXiv preprint arXiv:cond-mat/9709047},
year = {2009}
}
备注
4 pages REVTeX, incl one figure, to appear in Phys.Rev.Lett