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.
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页码：543 / 550
页数：8
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