Lattice distortion in disordered antiferromagnetic XY models

被引：1
作者：
Li, Peng-Fei [1 ]
Cao, Hai-Jing [1 ]
机构：
[1] Shanghai Univ Elect Power, Dept Math & Phys, Shanghai 200090, Peoples R China
来源：
CHINESE PHYSICS B | 2012年 / 21卷 / 07期
关键词：
lattice distortion; random modulation; spin-phonon coupling; SPIN-PEIERLS TRANSITION; INCOMMENSURATE PHASE; DYNAMICS; SYSTEMS; CUGEO3; CHAINS;
D O I：
10.1088/1674-1056/21/7/077501
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The behavior of lattice distortion in spin 1/2 antiferromagnetic XY models with random magnetic modulation is investigated with the consideration of spin-phonon coupling in the adiabatic limit. It is found that lattice distortion relies on the strength of the random modulation. For strong or weak enough spin-phonon couplings, the average lattice distortion may decrease or increase as the random modulation is strengthened. This may be the result of competition between the random magnetic modulation and the spin-phonon coupling.
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