Soliton instabilities in the easy plane ferromagnet Heisenberg chain with out-of-plane spin deviation
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| Format: | Artículo científico |
| Language: | en |
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Sociedad Mexicana de Física A.C.
2006
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| author | J. Pozo |
| author_facet | J. Pozo |
| contents | Soliton instabilities in the easy plane ferromagnet Heisenberg chain with out-of-plane spin deviation J. Pozo A. León Física, Astronomía y Matemáticas of out solitons easy plane plane spin deviation In this paper we investigate the presence of out-of-plane spin deviation ½(») in the easy-plane ferromagnetic Heisenberg chain by using thecoupled-boson operators together with the Schwinger transformation for the spin operator; this method allows us to conclude that the criticalbehaviour of the instability is due to the velocity of the nonlinear excitations (solitons) only for an appropriate range of the magnetic field.In this case, when the velocity becomes lower, the stable soliton corresponding to ½(») is distorted by magnons and loses stability. If weincrease the velocity of ½(»), it then decays into high frequency-oscillations. Nevertheless, we find an opposite competence effect producedby the velocity and the magnetic field on ½(»). 2006 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57065405 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.6 Vol.52 |
| format | Artículo científico |
| id | redalyc_57065405 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Sociedad Mexicana de Física A.C. |
| spellingShingle | Soliton instabilities in the easy plane ferromagnet Heisenberg chain with out-of-plane spin deviation J. Pozo Física, Astronomía y Matemáticas of out solitons easy plane plane spin deviation Soliton instabilities in the easy plane ferromagnet Heisenberg chain with out-of-plane spin deviation J. Pozo A. León Física, Astronomía y Matemáticas of out solitons easy plane plane spin deviation In this paper we investigate the presence of out-of-plane spin deviation ½(») in the easy-plane ferromagnetic Heisenberg chain by using thecoupled-boson operators together with the Schwinger transformation for the spin operator; this method allows us to conclude that the criticalbehaviour of the instability is due to the velocity of the nonlinear excitations (solitons) only for an appropriate range of the magnetic field.In this case, when the velocity becomes lower, the stable soliton corresponding to ½(») is distorted by magnons and loses stability. If weincrease the velocity of ½(»), it then decays into high frequency-oscillations. Nevertheless, we find an opposite competence effect producedby the velocity and the magnetic field on ½(»). 2006 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57065405 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.6 Vol.52 |
| title | Soliton instabilities in the easy plane ferromagnet Heisenberg chain with out-of-plane spin deviation |
| topic | Física, Astronomía y Matemáticas of out solitons easy plane plane spin deviation |
| url | https://www.redalyc.org/articulo.oa?id=57065405 |