Haowen Ren, Shih-Yu Wu, et al.
APL Materials
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.
Haowen Ren, Shih-Yu Wu, et al.
APL Materials
Jonathan Z. Sun, Christopher Safranski, et al.
Physical Review B
Mark Rubinstein, P.R. Broussard, et al.
Journal of Applied Physics
Bertha P. Chang, Neville Sonnenberg, et al.
Applied Physics Letters