Dispersion of a single hole in the t-J model

被引：71

作者：

Lee, TK

Shih, CT

机构：

[1] ACAD SINICA,INST PHYS,NANKANG,TAIWAN

[2] NATL TSING HUA UNIV,DEPT PHYS,HSINCHU,TAIWAN

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.55.5983

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dispersion of a single hole in the t-J model obtained by the exact result of 32 sites and the results obtained by self-consistent Born approximation and the Green function Monte Carlo method can be simply derived by a mean-field theory with d-wave resonating-valence-bond (d-RVB) and antiferromagnetic order parameters. In addition, it offers a simple explanation for the difference observed between those results. The presence of the extended van Hove region at (pi,0) is a consequence of the (d-RVB pairing instead of the antiferromagnetic order. Results including t' and t '' are also presented and explained consistently in a similar way.

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收藏

页码：5983 / 5987

页数：5

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