SINGLE-HOLE SPECTRAL DENSITY IN AN ANTIFERROMAGNETIC BACKGROUND

被引：40
|
作者：
POILBLANC, D [1 ]
SCHULZ, HJ [1 ]
ZIMAN, T [1 ]
机构：
[1] UNIV DELAWARE,DEPT PHYS & ASTRON,NEWARK,DE 19716
来源：
PHYSICAL REVIEW B | 1993年 / 47卷 / 06期
关键词：
D O I：
10.1103/PhysRevB.47.3268
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The dynamical spectral function of a single hole moving in a two-dimensional antiferromagnet is calculated on clusters of up to 26 sites. Quasiparticle peaks in the spectral function show up unambiguously at the bottom of the continuum. In some limited region of k space vague structures in the spectral density might be reminiscent of excited string levels. Our data for the Z factor of the t-J model are in excellent agreement with the self-consistent Born approximation.
引用
收藏
页码：3268 / 3272
页数：5
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