UNUSUAL STATES IN THE HEISENBERG-MODEL WITH COMPETING INTERACTIONS

被引：11

作者：

CHUBUKOV, AV

机构：

[1] Inst. for Phys. Problems, Acad. of Sci., Moscow

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1990年 / 2卷 / 19期

关键词：

D O I：

10.1088/0953-8984/2/19/012

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A phase diagram of the anisotropic Heisenberg model with competition between the nearest and the next-to-nearest neighbour exchange interactions is investigated by using the bosonisation scheme. An instability leading to a spontaneous dimerisation is found. The new 'superfluid' phases with both nonzero, though nonnominal, Z-magnetisation and broken symmetry in the XY-plane are detected in the anisotropic case.

引用

页码：4455 / 4470

页数：16

共 32 条

[1] RIGOROUS RESULTS ON VALENCE-BOND GROUND-STATES IN ANTIFERROMAGNETS [J].