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https://locus.ufv.br//handle/123456789/27007
Tipo: | Artigo |
Título: | Small amplitude oscillations of sine-gordon vortex states in planar magnets in three dimensions |
Autor(es): | Pereira, A . R. |
Abstract: | We investigate the spectrum of small amplitude oscillations of the sine-Gordon vortex-antivortex pair in layered ferromagnetic systems described by the anisotropic three-dimensional XY-model. In the case of a small interlayer coupling constant, vortex-pairs can be formed independently in each plane. Analytical expressions for two discrete modes with zero frequency are obtained. These zero modes are associated with the two-dimensional motion of the excitation on an individual plane and are important because the interference between them and a vortex-pair gives rise to contributions to the central peak. The continuum states, which contribute to EPR linewidth, are derived using the Born approximation. |
Palavras-chave: | Small amplitude Oscillations Vortex states |
Editor: | Brazilian Journal of Physics |
Tipo de Acesso: | Open Access |
URI: | http://dx.doi.org/10.1590/S0103-97332002000400025 https://locus.ufv.br//handle/123456789/27007 |
Data do documento: | Set-2002 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf | Texto completo | 167,63 kB | Adobe PDF | Visualizar/Abrir |
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