| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Magnetoelectric Coupling Induced Electric Dipole Glass State in Heisenberg Spin Glass |
| LIU Jun-Ming1,2,3, CHAN-WONG Lai-Wa1, CHOY Chung-Loong1 |
| 1Department of Applied Physics, Hong Kong Polytechnic University, Hong Kong2Laboratory of Solid State Microstructures, Nanjing University, Nanjing 2100933International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015 |
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| Cite this article: |
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LIU Jun-Ming, CHAN-WONG Lai-Wa, CHOY Chung-Loong 2009 Chin. Phys. Lett. 26 087501 |
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Abstract Multiferroic behavior in an isotropic Heisenberg spin glass with Gaussian random fields, incorporated by magnetoelectric coupling derived from the Landau symmetry argument, are investigated. Electric dipole glass transitions at finite temperature, due to coupling, are demonstrated by Monte Carlo simulation. This electric dipole glass state is solely ascribed to the coupling term with chiral symmetry of the magnetization, while the term associated with the spatial derivative of the squared magnetization has no contribution.
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| Keywords:
75.10.Nr
75.80.+q
77.90.+k
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Received: 03 February 2009
Published: 30 July 2009
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| PACS: |
75.10.Nr
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(Spin-glass and other random models)
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75.80.+q
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(Magnetomechanical effects, magnetostriction)
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77.90.+k
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(Other topics in dielectrics, piezoelectrics, and ferroelectrics and their properties)
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