| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Dzyaloshinskii–Moriya Interaction in Spin 1/2 Antiferromagnetic Rings with Nearest Next Neighbor Coupling |
| LI Peng-Fei**, CAO Hai-Jing, ZHENG Li |
Department of Mathematics and Physics, Shanghai University of Electric Power, Shanghai 200090
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| Cite this article: |
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LI Peng-Fei, CAO Hai-Jing, ZHENG Li 2013 Chin. Phys. Lett. 30 047503 |
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Abstract We numerically investigate the magnetoelastic (ME) instability in spin 1/2 antiferromagnetic rings with nearest-next neighbor (NNN) coupling J2 and Dzyaloshinskii–Moriya (DM) interaction Dz. It is found that, for a given Dz, there exists a critical J2c . As J2=J2c , the ME instability is irrelative to the DM interaction and NNN coupling. These results may come from the competition between the DM interaction and NNN coupling. The DM interaction does not affect the critical behavior at the point of J2=0.5, at which the systems always locate in the dimerized state.
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Received: 26 November 2012
Published: 28 April 2013
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| PACS: |
75.10.Jm
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(Quantized spin models, including quantum spin frustration)
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75.10.Pq
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(Spin chain models)
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75.30.Kz
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(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
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