Theory of magnon-hole interaction for the anisotropic t-J model

被引：5
|
作者：
Chang, Z [1 ]
机构：
[1] CHINA CTR ADV SCI & TECHNOL, WORLD LAB, BEIJING 100080, PEOPLES R CHINA
来源：
PHYSICAL REVIEW B | 1996年 / 54卷 / 14期
关键词：
D O I：
10.1103/PhysRevB.54.10046
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The general Holstein-Primakoff transformation is used to get a theory of the magnon-hole interaction for the anisotropic t-J model in a three-dimensional tetragonal lattice. The sublattice magnetization, internal energy, and specific heat are calculated by taking into account the contributions of magnon-magnon, magnon-hole, and hole-hole as well as antiferromagnetic spin polaron interactions. We obtain a uniform expression for these quantities, which is governed by the concentration of doping and the anisotropic degree. The results show that the effect of the small interlayer coupling in a layered realistic copper-oxide superconductors turns indeed the temperature dependence of the physical quantities from two-dimensional to quasi-two-dimensional behavior at low temperature.
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页码：10046 / 10053
页数：8
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