2-DIMENSIONAL QUANTUM ANTIFERROMAGNET IN A STRONG MAGNETIC-FIELD - THE CASE OF SPIN 1/2

被引:4
作者
GLUZMAN, S [1 ]
机构
[1] WEIZMANN INST SCI,DEPT CHEM PHYS,IL-76100 REHOVOT,ISRAEL
来源
PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1993年 / 176卷 / 01期
关键词
D O I
10.1002/pssb.2221760123
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The problem of the two-dimensional quantum antiferromagnet of spin 1/2 on a square lattice in a strong transverse magnetic field close to saturation is studied in terms of the equivalent Bose gas problem. The existence of a soft sound-like mode and of a phase transition from the state with specific canted magnetic structure to the disordered ferromagnetic state is demonstrated. The expressions for thermodynamical and magnetic characteristics are derived.
引用
收藏
页码:237 / 245
页数:9
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