Open AccessThe study of parallel pump microwave magnetic field instability threshold in metallic ferromagnetic strip under in-plane confinement
Author(s) -
Xu Yan,
Hu Jia
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.4521
Subject(s) - condensed matter physics , physics , magnetic field , ferromagnetism , instability , jump , spin wave , boundary value problem , plane (geometry) , magnetization , mechanics , quantum mechanics , geometry , mathematics
Using the Landau-Lifshitz equation, the propagating of spin wave in metallic magnetic stripe has been investigated, in which the effective boundary condition is applied for the dynamic magnetization of the metallic magnetic strip. The relationship between spin wave spectrum and width of the strip has analytically been derived. Numerical calculations show that in-plane confinement results in the obvious kinks in the threshold curves. And with the increase of strip width, the kink numbers almost rise exponentially, while the threshold jump at the first kink is nearly in inverse proportion to its width.