EXACT MOMENTUM DISTRIBUTION OF THE U=INFINITY HUBBARD-MODEL ON A 4X4 CLUSTER

被引：9

作者：

CHIAPPE, G ^{[1
]}

LOUIS, E ^{[1
]}

GALAN, J ^{[1
]}

GUINEA, F ^{[1
]}

VERGES, JA ^{[1
]}

机构：

[1] UNIV AUTONOMA MADRID,CONSEJO SUPER INVEST CIENTIF C-XII,INST CIENCIA MAT MADRID SEDE B,E-28049 MADRID,SPAIN

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.46.3506

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Lanczos method has been used to obtain the evolution after hole doping of the momentum distribution of a one-band Hubbard model of infinite U on a 4 x 4 cluster of the square lattice. Our results show that the corner of the Brillouin zone is progressively emptied as holes are introduced into the half-filled system because only one electron per k point is allowed in this situation. On the other hand, the behavior in the dilute limit is more conventional: approximately two electrons per k point occupy the lower part of the one-electron band.

引用

页码：3506 / 3509

页数：4

共 28 条

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