Electroneutrality and the Friedel sum rule in a Luttinger liquid

Details Electroneutrality and the Friedel sum rule in a Luttinger liquid Electroneutrality and the Friedel sum rule in a Luttinger liquid

1997-09-04

arxiv.org/abs/cond-mat/9709047v1

Phys. Rev. Lett. 79, 3463 (1997).

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages REVTeX, incl one figure, to appear in Phys.Rev.Lett

Scientific paper

10.1103/PhysRevLett.79.3463

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.

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