DIPOLAR ANTIFERROMAGNETISM IN THE SPIN-WAVE APPROXIMATION

被引:16
作者
CORRUCCINI, LR
WHITE, SJ
机构
[1] Department of Physics, University of California, Davis
来源
PHYSICAL REVIEW B | 1993年 / 47卷 / 02期
关键词
D O I
10.1103/PhysRevB.47.773
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The spin-wave Hamiltonian for a two-sublattice antiferromagnet with purely dipolar interactions is diagonalized. The simple-cubic (sc) lattice is solved as an example, and is found to exhibit zero-point-motion corrections to the Neel state that are much larger than those of the nearest-neighbor sc Heisenberg antiferromagnet. The two-dimensional square dipolar lattice is found not to exhibit long-range order at finite temperature in this approximation.
引用
收藏
页码:773 / 777
页数:5
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