Switching probability in all-perpendicular spin valves
D. Bedau, H. Liu, et al.
DRC 2010
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.
D. Bedau, H. Liu, et al.
DRC 2010
Jonathan Z. Sun, Barbaros Özyilmaz, et al.
Journal of Applied Physics
Christopher Safranski, Jonathan Z. Sun
Physical Review B
Jonathan Z. Sun
Physical Review B