中国物理B ›› 1995, Vol. 4 ›› Issue (4): 291-295.doi: 10.1088/1004-423X/4/4/007

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EFFECTS OF ELECTRON-ELECTRON INTERACTION AND ELECTRON-PHONON COUPLING ON THE SPIN-DENSITY-WAVE OF QUASI-ONE-DIMENSIONAL ORGANIC POLYMER FERROMAGNETS

方忠, 刘祖黎, 姚凯伦, 李再光   

  1. Department of Physics and State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074, China
  • 收稿日期:1994-04-19 出版日期:1995-04-20 发布日期:1995-04-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China.

EFFECTS OF ELECTRON-ELECTRON INTERACTION AND ELECTRON-PHONON COUPLING ON THE SPIN-DENSITY-WAVE OF QUASI-ONE-DIMENSIONAL ORGANIC POLYMER FERROMAGNETS

FANG ZHONG (方忠), LIU ZU-LI (刘祖黎), YAO KAI-LUN (姚凯伦), LI ZAI-GUANG (李再光)   

  1. Department of Physics and State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:1994-04-19 Online:1995-04-20 Published:1995-04-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China.

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摘要： Based on a theoretical model proposed for quasi-one-dimensional organic polymer ferro-magnet poly-BIPO, the effects of electron-electron interaction and electron-phonon coupling on the spin-density-wave (SDW) state of poly-BIPO system are studied. It is found that the SDW state is the stable ground state of the system, in which the system shows ferromagnetic order. And the larger electron-electron interaction and the smaller electron-phonon coupling will make the SDW state more stable than the nonmagnetic state.

Abstract: Based on a theoretical model proposed for quasi-one-dimensional organic polymer ferro-magnet poly-BIPO, the effects of electron-electron interaction and electron-phonon coupling on the spin-density-wave (SDW) state of poly-BIPO system are studied. It is found that the SDW state is the stable ground state of the system, in which the system shows ferromagnetic order. And the larger electron-electron interaction and the smaller electron-phonon coupling will make the SDW state more stable than the nonmagnetic state.

中图分类号:  (Spin-density waves)

  • 75.30.Fv
75.50.Dd (Nonmetallic ferromagnetic materials) 63.20.K- (Phonon interactions) 82.35.-x (Polymers: properties; reactions; polymerization)