QUASI-PARTICLE CONDUCTIVITY IN THE T-J MODEL

被引：5

作者：

EDER, R

机构：

[1] Max-Planck-Institut für Festkörperforschung

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.44.12609

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The quasiparticle contribution to the dc conductivity in the t-J model is discussed. The starting point is an ansatz for the wave function of the low-lying eigenstates of the system with one hole. It is found that the behavior of the stiffness constant D under a change of t/J is opposite to that of the bandwidth, in contrast to what would be expected for a Fermi liquid but in agreement with the results of exact diagonalizations. A simple "string picture" yields a natural explanation for this.

引用

页码：12609 / 12612

页数：4

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