Fluctuation effects of gauge fields in the slave-boson t-J model

被引：6

作者：

Ichinose, I

Matsui, T

Sakakibara, K

机构：

[1] Univ Tokyo, Inst Phys, Tokyo 153, Japan

[2] Kinki Univ, Dept Phys, Higashiosaka, Osaka 577, Japan

[3] Nara Natl Coll Technol, Dept Phys, Yamatokohriyama 63911, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1998年 / 67卷 / 02期

关键词：

high-T-c superconductivity; t-J model; gauge field theory; confinement-deconfinement transition;

D O I：

10.1143/JPSJ.67.543

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a quantitative study of the charge-spin separation (CSS) phenomenon in a U(1) gauge theory of the t-J model of high-T-c superconductors. We calculate the critical temperature T-CSS of a confinement-deconfinement phase transition as a function of hole doping delta, below which the CSS takes place. Fluctuations of gauge fields are so large that T-CSS is reduced to about 10% of its mean-field value. We also make some comments on the phase structure from a gauge-theoretical point of view.

引用

页码：543 / 550

页数：8

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