Phase separation of the two-dimensional t-J model

被引：41

作者：

Shih, CT ^{[1
]}

Chen, YC

Lee, TK

机构：

[1] Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan

[2] Tunghai Univ, Dept Phys, Taichung 40704, Taiwan

[3] Acad Sinica, Inst Phys, Taipei, Taiwan

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.57.627

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The boundary of phase separation of the two-dimensional t-J model is investigated by the power-lanczos method and Maxwell construction. The method is similar to a variational approach and it determines the lower bound of the phase-separation boundary with J(c)/t=0.6+/-0.1 in the limit n(e) similar to 1. In the physically interesting regime of high-T-c superconductors where 0.3<J/t<0.5 there is no phase separation.

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页码：627 / 631

页数：5

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