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Domain wall motion in ferromagnets modelled by a quintic complex Ginzburg-Landau equation |
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| Authors: | J-P Nguenang T Njassap Njassap T C Kofané |
| Institution: | (1) Department of Physics, Faculty of Science University of Douala, Fundamental Physics Laboratory Group of, Nonlinear Science and Complex Systems, P.O. Box, 24157 Douala, Cameroon;(2) Condensed Matter and Statistical Physics section of the Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, 34014 Trieste, Italy;(3) Laboratoire de Mécanique, Faculté des Sciences, Université de Yaoundé I B.P. 812, Yaoundé, Cameroun |
| Abstract: | A quintic complex Ginzburg-Landau equation is derived from a Landau-Lifshitz-Gilbert equation and is used to describe the magnetization dynamics in a one-dimensional uni-axial ferromagnet. Trough the use of suitable approximations, we derive the magnetic solitary wave excitations solutions which have pulse-like shapes. Subsequent numerical simulations reveal domain wall propagation. |
| Keywords: | PACS" target="_blank">PACS 47 35 fg Solitary waves 52 35 Mw Nonlinear phenomena: waves wave propagation and other interactions (including parametric effects mode coupling ponderomotive effects etc ) 67 30 hj Spin dynamics 71 35 Ji Excitons in magnetic fields magnetoexcitons |
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