Quantum spin liquid in an antiferromagnet with four-spin interactions

被引：0
|
作者：
S. S. Aplesnin
机构：
[1] Siberian Branch of the Russian Academy of Sciences,Kirenskii Institute of Physics
来源：
Physics of the Solid State | 1997年 / 39卷
关键词：
Spectroscopy; Anisotropy; State Physics; Phase Diagram; Correlation Function;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A quantum Monte Carlo study of the anisotropic antiferromagnet with four-spin interaction (K) and with spin S=1/2 on a square lattice is reported. Temperature dependences of the capacity, susceptibility, spin correlation functions, and correlation length, and field dependences of magnetization are calculated. Phase diagrams of the ground-state antiferromagnet and gap (K>0) and gapless (K<0) quantum spin liquids are determined in the exchange-anisotropy-four-spin-coupling-constant (K), magnetic-field (H)-temperature (T), and temperature-(T)-K planes for an exchange anisotropy of 0.1 J.
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页码：1246 / 1250
页数：4
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