STT-MRAM with double magnetic tunnel junctions
Guohan Hu, J.H. Lee, et al.
IEDM 2015
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.
Guohan Hu, J.H. Lee, et al.
IEDM 2015
J. Cucchiara, Eric E. Fullerton, et al.
Physical Review B - CMMP
Gabriel D. Chaves-O'Flynn, Georg Wolf, et al.
Physical Review Applied
M. Lavanant, P. Vallobra, et al.
Physical Review Applied