MAGNETIC-PROPERTIES OF T-J MODEL

被引：132

作者：

TANAMOTO, T ^{[1
]}

KUBOKI, K ^{[1
]}

FUKUYAMA, H ^{[1
]}

机构：

[1] KOBE UNIV, DEPT PHYS, NADA KU, KOBE 657, JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1991年 / 60卷 / 09期

关键词：

D O I：

10.1143/JPSJ.60.3072

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dynamical spin susceptibility chi (q, omega), of the t-J model in two-dimensional square lattice have been studied based on the mean field approximation to the slave-boson formalism. The static spin susceptibility, chi (q, 0), and Im chi (q, omega) at various energy, omega, have been calculated. We found; 1) chi (0,0) has only weak temperature dependence 2) T1T is-proportional-to (T + theta) for T greater-than-or-similar-to 0.1 J with theta-linearly dependent on the doping rate, delta-3) T1T has a minimum at T = (0.1 approximately 0.2)J 4) Im chi (q, omega) at q = Q = (pi, pi) has a gap like structure as a function of omega if the temperature is low. All these are consistent with experimental results.

引用

页码：3072 / 3092

页数：21

共 65 条

[1] LARGE-N LIMIT OF THE HEISENBERG-HUBBARD MODEL - IMPLICATIONS FOR HIGH-TC SUPERCONDUCTORS [J].