Christopher Safranski, Guohan Hu, et al.
IEEE T-ED
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.
Christopher Safranski, Guohan Hu, et al.
IEEE T-ED
Jack C. Sankey, Yong-Tao Cui, et al.
Nature Physics
Justin M. Shaw, Hans T. Nembach, et al.
IEEE Magnetics Letters
D. Bedau, H. Liu, et al.
DRC 2010