Lattice distortion in disordered antiferromagnetic XY models

doi:10.1088/1674-1056/21/7/077501

中国物理B ›› 2012, Vol. 21 ›› Issue (7): 77501-077501.doi: 10.1088/1674-1056/21/7/077501

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Lattice distortion in disordered antiferromagnetic XY models

李鹏飞, 曹海静

Department of Mathematics and Physics, Shanghai University of Electric Power, Shanghai 200090, China

收稿日期:2011-12-21 修回日期:2012-01-08 出版日期:2012-06-01 发布日期:2012-06-01

Lattice distortion in disordered antiferromagnetic XY models

Li Peng-Fei(李鹏飞)^† and Cao Hai-Jing(曹海静)

Department of Mathematics and Physics, Shanghai University of Electric Power, Shanghai 200090, China

Received:2011-12-21 Revised:2012-01-08 Online:2012-06-01 Published:2012-06-01
Contact: Li Peng-Fei E-mail:lpfshiep@sina.com

摘要/Abstract

摘要： The behavior of lattice distortion in the 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 the 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 results of the competition between the random magnetic modulation and the spin--phonon coupling.

关键词: lattice distortion, random modulation, spin--phonon coupling

Abstract: The behavior of lattice distortion in the 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 the 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 results of the competition between the random magnetic modulation and the spin--phonon coupling.

Key words: lattice distortion, random modulation, spin--phonon coupling

中图分类号: (Spin chain models)

75.10.Pq

75.50.Lk (Spin glasses and other random magnets) 75.50.Ee (Antiferromagnetics)

李鹏飞, 曹海静 . Lattice distortion in disordered antiferromagnetic XY models[J]. 中国物理B, 2012, 21(7): 77501-077501.

Li Peng-Fei(李鹏飞) and Cao Hai-Jing(曹海静) . Lattice distortion in disordered antiferromagnetic XY models[J]. Chin. Phys. B, 2012, 21(7): 77501-077501.

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Lattice distortion in disordered antiferromagnetic XY models

Lattice distortion in disordered antiferromagnetic XY models

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