Justin M. Shaw, Hans T. Nembach, et al.
IEEE Magnetics Letters
We report on a numerical study of the micromagnetic switching process of a nanostructured spin torque device. We show that incoherent spin waves can be excited over a wide range of current and field even at zero temperature. These large amplitude, incoherent, and nonzero k spin wave modes are shown to alter the switching phase boundary from that calculated within a macrospin model. The presence of telegraphic transitions between different spin wave modes may also contribute to the so-called back-hopping phenomenon where the switching probability varies nonmonotonically with increasing bias current. © 2011 American Institute of Physics.
Justin M. Shaw, Hans T. Nembach, et al.
IEEE Magnetics Letters
Christopher Safranski, Jonathan Z. Sun, et al.
Physical Review Letters
Gabriel D. Chaves-O'Flynn, Georg Wolf, et al.
Physical Review Applied
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Journal of Applied Physics