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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 |
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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.
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Received: 21 December 2011
Revised: 08 January 2012
Accepted manuscript online:
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PACS:
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75.10.Pq
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(Spin chain models)
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75.50.Lk
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(Spin glasses and other random magnets)
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75.50.Ee
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(Antiferromagnetics)
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Corresponding Authors:
Li Peng-Fei
E-mail: lpfshiep@sina.com
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Cite this article:
Li Peng-Fei(李鹏飞) and Cao Hai-Jing(曹海静) Lattice distortion in disordered antiferromagnetic XY models 2012 Chin. Phys. B 21 077501
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