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Interchain Order and Ferromagnetic State in Organic Ferromagnets |
| WANG Wei-zhong1;YAO Kai-lun1;LIN Hai-qing2;LI Hong-tao3 |
| 1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
2Department of Physics & Research Center of Materials Science and Technology, Chinese University of Hong Kong, Hong Kong
3Department of Electronic Engineering, Dongguan Institute of Technology, Dongguan, Guangdong 511700
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| Cite this article: |
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WANG Wei-zhong, YAO Kai-lun, LIN Hai-qing et al 1999 Chin. Phys. Lett. 16 538-540 |
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Abstract Two kinds of alignment of two neighboring organic ferromagnetic chains are studied with Su-Schrieffer-Heeger Hamiltonian added by Hubbard repulsion and antiferromagnetic correlation between side radicals and main chain. The results show that interchain coupling makes the energy gap decreasing. The out-of-phase alignment of two chains is energetically preferred to the in-phase alignment and it is a more possible ferromagnetic structure if the oscillatory part of interchain coupling of the in-phase is small. The spin density and dimerization along the main chain are also discussed.
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| Keywords:
75.50.Dd
71.20.Hk
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Published: 01 July 1999
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