Title :
Phase shift of spin waves traveling through a 180° Bloch-domain wall
Author :
Bayer, Christian ; Schultheiss, Helmut ; Hillebrands, Burkard ; Stamps, Robert L.
Author_Institution :
Fachbereich Phys. & Forschungsschwerpunkt MINAS, Kaiserslautern Univ., Germany
Abstract :
We describe a spin wave traveling through a 180° Bloch-domain wall. The resulting linearized Bloch equations have the same form as for a spin wave propagating past a negative effective field well. The field varies slowly relative to the wavelength of the considered spin waves. A Wentzel-Kramers-Brillouin (WKB) approximation is used to estimate the phase shift and is compared to known exact results.
Keywords :
approximation theory; magnetic domain walls; spin waves; Bloch-domain wall; WKB approximation; Wentzel-Kramers-Brillouin approximation; linearized Bloch equation; phase shift; spin wave propagation; Anisotropic magnetoresistance; Australia; Equations; Geometry; Magnetic domain walls; Magnetization; Phase estimation; Physics; Solitons; Stationary state; Domain wall; phase shift; spin wave;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.855233
