Macrospin model of incubation delay due to the field-like spin transfer torque

Details Macrospin model of incubation delay due to the field-like spin transfer torque Macrospin model of incubation delay due to the field-like spin transfer torque

2008-10-19

arxiv.org/abs/0810.3421v1

Phys. Rev. B 79, 100402 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.79.100402

We show that the absence of pre-switching oscillations ("incubation delay") in magnetic tunnel junctions can be explained within the macrospin model by a sizable field-like component of the spin-transfer torque. It is further suggested that measurements of the voltage dependence of tunnel junction switching time in the presence of external easy axis magnetic fields can be used to determine the magnitude and voltage dependence of the field-like torque.

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