MOMENTUM DISTRIBUTIONS AND FERMI-SURFACE IN T-J MODEL

被引：11

作者：

DING, HQ

机构：

[1] Materials Simulation Center, Beckman Institute, California Institute of Technology, Pasadena

来源：

PHYSICA C | 1992年 / 203卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(92)90512-B

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electron and hole momentum distributions are measured in the t-J model in one- and two-dimensional clusters. The electron momentum occupancy exhibits a clear Fermi surface while the hole momentum occupancy exhibits a clear tendency of the spin-down hole to occupy the same k-state as the one singly occupied by a spin-up electron. The Fermi surface remains unchanged in the entire metallic region and disappears in the insulating (phase-separated) region.

引用

页码：91 / 97

页数：7

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