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Interchain Order and Ferromagnetic State in Organic Ferromagnets

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摘要 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.
作者 王为忠 姚凯伦 林海青 李洪涛 WANG Wei-zhong;YAO Kai-lun;LIN Hai-qing;LI Hong-tao(Department of Physics,Huazhong University of Science and Technology,Wuhan 430074;Department of Physics&Research Center of Materials Science and Technology,Chinese University of Hong Kong,Hong Kong;Department of Electronic Engineering,Dongguan Institute of Technology,Dongguan,Guangdong 511700)
出处 《Chinese Physics Letters》 SCIE CAS CSCD 1999年第7期538-540,共3页 中国物理快报(英文版)
基金 Supported by the National Natural Science Foundation of China under Grant No.19775016 the Direct Grant for Research from the Research Grants Council of the Hong Kong Goverment.
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