ELECTRONEUTRALITY AND THE FRIEDEL SUM-RULE IN A LUTTINGER LIQUID

Authors
EGGER R GRABERT H
Citation
R. Egger et H. Grabert, ELECTRONEUTRALITY AND THE FRIEDEL SUM-RULE IN A LUTTINGER LIQUID, Physical review letters, 79(18), 1997, pp. 3463-3466
Citations number
17
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
79
Issue
18
Year of publication
1997
Pages
3463 - 3466
Database
ISI
SICI code
0031-9007(1997)79:18<3463:EATFSI>2.0.ZU;2-9
Abstract
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 incons istency can be traced to the presence of external screening gates resp onsible for the effectively short-ranged Coulomb interactions. We also draw attention to the breakdown of linear screening for wave vectors close to 2k(F).