Dark spin wave envelope solitons in the model with nonlinear dispersion

Author

Li, Lihong ; Yashiro, Ken Ichiro ; Ohkawa, Sumio ; Zaspel, C.E. ; Slavin, A.N.

Author_Institution

Dept. of Electr. & Electron. Eng., Chiba Univ., Japan

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

3442

Lastpage

3444

Abstract

Spin wave envelope solitons in a magnetic thin film are modeled by the nonlinear Schroedinger equation. Recent experimental observations of dark solitons in yttrium iron garnet thin films, however, are different from the mathematical predictions. In particular, it is expected that carrier wave phase will be conserved during propagation but this does not appear to be the case in experiment. To understand this discrepancy, higher order dispersive and nonlinear terms have been added to the model equation. Numerical simulations show that phase still must be conserved in the modified model

Keywords

Schrodinger equation; dispersion (wave); garnets; magnetic thin films; modelling; numerical analysis; solitons; spin waves; yttrium compounds; YFe5O12; YIG; YIG thin films; carrier wave phase; dark spin wave envelope solitons; higher order dispersive terms; higher order nonlinear terms; magnetic thin film; model; nonlinear Schroedinger equation; nonlinear dispersion; numerical simulations; Delay lines; Dispersion; Garnet films; Iron; Magnetic films; Nonlinear equations; Numerical simulation; Physics; Solitons; Yttrium;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.617971

Filename

617971