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Nonlinear Excitation in a Ferrimagnetic Zigzag Chain |
| WANG Wei-Zhong |
| Department of Physics, Wuhan University, Wuhan 430072 |
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| Cite this article: |
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WANG Wei-Zhong 2003 Chin. Phys. Lett. 20 2015-2018 |
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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.
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| Keywords:
71.38.-k
73.20.Mf
75.30.Fv
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Published: 01 November 2003
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| PACS: |
71.38.-k
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(Polarons and electron-phonon interactions)
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73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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75.30.Fv
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(Spin-density waves)
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