HALL CONDUCTIVITY AND FERMI-SURFACE IN HIGHLY CORRELATED SYSTEMS

被引：33

作者：

CASTILLO, HE ^{[1
]}

BALSEIRO, CA ^{[1
]}

机构：

[1] INST BALSEIRO,RA-8400 BARILOCHE,RIO NEGRO,ARGENTINA

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.68.121

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate exactly the one-particle spectral densities and Hall conductivity for the two-dimensional Hubbard model in the large-U limit, for two different finite clusters. The Fermi surface obtained from the one-particle spectral functions is consistent with Luttinger's theorem, but the Hall conductivity changes from electronlike for a dilute system to holelike for a nearly half-filled system, indicating the deconfinement of charge and spin excitations in a two-dimensional system.

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页码：121 / 124

页数：4

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