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Experimental conditions for magnetostatic wave envelope solitons

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2 Author(s)
K. Yashiri ; Dept. of Electr. & Electron. Eng., Chiba Univ., Japan ; S. Ohkawa

Yttrium iron garnet (YIG) films are widely used to study microwave excitations owing to their low ferromagnetic resonance linewidth. This property does not necessarily imply that the magnetostatic wave (MSW) solitons can propagate on the YIG films almost free of propagation losses. The nonlinear Schrodinger equation (NLSE) with the third order dispersion and dissipative effects has been used to describe magnetostatic forward volume wave envelope solitons. The split-step Fourier method has been used to solve the NLSE with the third order dispersion and dissipative effects. The numerical results show that the linewidth is not narrow enough to support the propagation of the magnetostatic wave (MSW) solitons. In order to observe a soliton-like behaviour in experiments, we must make the dispersion of the MSW so high that the waveform of an input pulse may make a sufficiently rapid change and the MSW soliton formation may be completed before the dissipative effect becomes prevailing

Published in:

IEEE Transactions on Magnetics  (Volume:33 ,  Issue: 5 )