MOBILE HOLES IN A 2-DIMENSIONAL HEISENBERG-ANTIFERROMAGNET

被引：36

作者：

ITOH, T

ARAI, M

FUJIWARA, T

机构：

[1] Department of Applied Physics, University of Tokyo, Bunkyo-ku

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.42.4834

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Th t-t-t-J model is investigated by a rigorous diagonalization in a two-dimensional square lattice as large as 20 × 20, which has no additional degeneracy. The ground state of one hole in the t-J model is at a momentum k near (/2,/2) with a total spin S=1/2 and that of two holes is at k=(0,0) with S=0. The hole pairing and nonclustering may be preferable for the ground state of the t-t-t-J model in the region of t>0 and t0. © 1990 The American Physical Society.

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页码：4834 / 4837

页数：4

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