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
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
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.
Received: 11 November 1994
Accepted manuscript online:
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