中国物理B ›› 1995, Vol. 4 ›› Issue (7): 505-509.doi: 10.1088/1004-423X/4/7/004

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MAGNON EXCITATION OF QUASI-ONE-DIMENSIONAL ORGANIC FERROMAGNET

姚凯伦1, 王宇青2, 熊元生2, 易林2   

  1. (1)International Center of Materials Physics, Academia Sinica, Shenyang 110015, China; Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China; (2)National Laboratory of Laser Technology, Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
  • 收稿日期:1994-11-11 出版日期:1995-07-20 发布日期:1995-07-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China.

MAGNON EXCITATION OF QUASI-ONE-DIMENSIONAL ORGANIC FERROMAGNET

WANG YU-QING (王宇青)a, XIONG YUAN-SHENG (熊元生)a, YI LIN (易林)a, YAO KAI-LUN (姚凯伦)b   

  1. a National Laboratory of Laser Technology, Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China; b International Center of Materials Physics, Academia Sinica, Shenyang 110015, China; Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:1994-11-11 Online:1995-07-20 Published:1995-07-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China.

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摘要： A new quasi-one-dimensional organic ferromagnet model is proposed. Magnon excitations for finite and infinite on-site repulsion of electrons on main carbon chain are investigated. It is found that the lowest branch of spectrum preserves the characteristics of the ferromagnetic magnon. It is also shown that with increasing of the on-site repulsion energy, the itinerant π-electrons become tightly localized.

Abstract: A new quasi-one-dimensional organic ferromagnet model is proposed. Magnon excitations for finite and infinite on-site repulsion of electrons on main carbon chain are investigated. It is found that the lowest branch of spectrum preserves the characteristics of the ferromagnetic magnon. It is also shown that with increasing of the on-site repulsion energy, the itinerant $\pi$-electrons become tightly localized.

中图分类号:  (Spin waves)

  • 75.30.Ds
75.50.Dd (Nonmetallic ferromagnetic materials) 75.10.-b (General theory and models of magnetic ordering)