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Title: Spin transfer switching dynamics in magnetic nanostructures
Authors: Guo, J. 
Ghee Tan, S.
Abdul Jalil, M.B. 
Lin, L.
Keywords: Eddy Current.
Magnetization Switching
Spin Transfer Torque
Issue Date: Sep-2010
Citation: Guo, J., Ghee Tan, S., Abdul Jalil, M.B., Lin, L. (2010-09). Spin transfer switching dynamics in magnetic nanostructures. Nanoscience and Nanotechnology Letters 2 (3) : 244-247. ScholarBank@NUS Repository.
Abstract: Recent experimental evidence of spin transfer switching at reasonably low current densities of 107∼109 A/cm2 in magnetic nanostructures has triggered keen research interest in this area. We investigate the effect of current density J and spin polarization ratio P on the magnetization switching dynamics of an exemplary ferromagnetic nanostructure of dimensions 50×50×10 nm3. The simulations are performed based on a three-dimensional micromagnetic model which incorporates the Slonczewski spin transfer torque and the damping effects of eddy current. Our simulation results show that, in general, a faster magnetic reversal speed can be achieved with a larger P and this dependence on P becomes more significant with an increase in J. Our numerical simulation indicates the optimal conditions in terms of the applied current properties J and P for fast spin transfer switching in the presence of eddy currents. Copyright © 2010 American Scientific Publishers.
Source Title: Nanoscience and Nanotechnology Letters
ISSN: 19414900
DOI: 10.1166/nnl.2010.1092
Appears in Collections:Staff Publications

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