“Bright” and “dark” spin wave envelope solitons in magnetic films

Author

Slavin, A.N. ; Rojdestvenski, I.V.

Author_Institution

Oakland Univ., Rochester, MI, USA

Volume

30

Issue

1

fYear

1994

fDate

1/1/1994 12:00:00 AM

Firstpage

37

Lastpage

45

Abstract

The properties of “bright” and “dark” spin wave envelope solitons in dielectric magnetic films are analyzed. It is shown that the nonlinear mechanism responsible for spin wave envelope soliton formation in films is a four-wave interaction between linearly excited spin waves. The coefficients of this interaction are calculated in the case of a tangentially magnetized magnetic film by means of classical Hamiltonian formalism for spin waves. Results of this rigorous calculation are compared with the results of the approximate calculation done by means of the “method of envelopes.” Durations of “bright” and “dark” magnetostatic wave envelope solitons are calculated and compared to the results of experiments performed in tangentially magnetized yttrium-iron garnet (YIG) films

Keywords

magnetic thin films; magnetostatic waves; solitons; spin waves; YIG films; bright spin wave envelope solitons; classical Hamiltonian formalism; dark spin wave envelope solitons; dielectric magnetic films; four-wave interaction; linearly excited spin waves; magnetic films; magnetostatic wave envelope solitons; nonlinear mechanism; tangentially magnetized magnetic film; yttrium-iron garnet films; Dielectric films; Differential equations; Dispersion; Frequency; Magnetic films; Magnetostatic waves; Nonlinear equations; Schrodinger equation; Signal processing; Solitons;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.272513

Filename

272513