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Competition Between Two Ordering Processes in Two-Dimensional Doped Antiferromagnets |
| AN Jin1,2;GONG Chang-De1,3;LIN Hai-Qing2 |
| 1National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093
2Department of Physics, The Chinese University of Hong Kong, Hong Kong
3CCAST (World Laboratory), P.O. Box 8730, Beijing 100080 |
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| Cite this article: |
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AN Jin, GONG Chang-De, LIN Hai-Qing 2001 Chin. Phys. Lett. 18 419-421 |
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Abstract We provide a Landau theory of the coupled charge density wave and spin density wave order parameters to investigate the possibility of coexistence or competition between the two ordering processes occurring in the two-dimensional doped antiferromagnet. We find that the two ordering processes can coexist only in a certain region of coupling parameters, andthe one with lower transition temperature can only coexist together with the other one with higher transition temperature and can not be stabilized separately. Phase diagrams in different situations are given.
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71.10.Ay
75.10.-b
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Published: 01 March 2001
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| PACS: |
71.10.Ay
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(Fermi-liquid theory and other phenomenological models)
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75.10.-b
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(General theory and models of magnetic ordering)
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