Nonlinear Excitation in a Ferrimagnetic Zigzag Chain
WANG Wei-Zhong
Department of Physics, Wuhan University, Wuhan 430072
Nonlinear Excitation in a Ferrimagnetic Zigzag Chain
WANG Wei-Zhong
Department of Physics, Wuhan University, Wuhan 430072
关键词 ：
71.38.-k ,
73.20.Mf ,
75.30.Fv
Abstract ： We study the nonlinear excitation (solitons) in a ferrimagnetic polymer chain by using a total Hamiltonian consisting of Su-Schrieffer-Heeger Hamiltonian and a Hubbard term. At half-filling, the distortion of lattices forms domain wall solitons while the spin configuration forms the envelope solitons. The soliton pair is obtained in a range of the electron-electron (e-e) interaction U, which depends on the electron-phonon (e-ph) interaction. The spin solitons corresponding to the left domain wall and the right domain wall of the displacement are quite different.
Key words ：
71.38.-k
73.20.Mf
75.30.Fv
出版日期: 2003-11-01
:
71.38.-k
(Polarons and electron-phonon interactions)
73.20.Mf
(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
75.30.Fv
(Spin-density waves)
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2003, Vol. 20 
