Collimated spin wave beam generated by a single layer, spin torque nanocontact
Mark Hoefer, Thomas J. Silva, M D. Stiles
A model of spin-torque-induced magnetization dynamics based on semiclassical spin diffusion theory for a single-layer nanocontact in presented. The model incorporates effects due to the current-induced Oersted field and predicts the generation of a variety of spatially dependent, coherent, processional magnetics wave structures. Directionally controllable collimated spin wave beams, vortex spiral waves, and localized standing waves are found to be excited by the interplay of the Oersted ﬁeld and the orientation of an applied ﬁeld. These fields act as a spin wave 'corral' around the nanocontact that controls the propagation of spin waves in certain directions.
Physical Review B (Condensed Matter and Materials Physics)
, Silva, T.
and Stiles, M.
Collimated spin wave beam generated by a single layer, spin torque nanocontact, Physical Review B (Condensed Matter and Materials Physics)
(Accessed March 4, 2024)