Strong coupling expansion of the Kondo lattice model

被引：0
|
作者：
Perez-Conde, J. [1 ]
Pfeuty, P. [1 ]
机构：
[1] Universidad Publica de Navarra, Pamplona, Spain
来源：
Physica B: Condensed Matter | 1996年 / 223-224卷 / 1-4期
关键词：
Electric charge - Electrons - Impurities - Mathematical models - Monte Carlo methods - Perturbation techniques - Phase transitions - Quantum theory - Variational techniques;
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学科分类号：
摘要：
The Kondo lattice model is an extension to a lattice of the one impurity model. This model has been introduced to describe heavy-fermions systems. We study this model in the special case of half-filling of the conduction band. We apply a general perturbation method in t/J, where J is the antiferromagnetic Kondo interaction and t the hopping parameter for the conduction electrons. The double occupancy, the on-site total spin and the charge and spin gaps are obtained to lower order in t J.
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页码：438 / 440
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