Bulletin of the American Physical Society
APS March Meeting 2011
Volume 56, Number 1
Monday–Friday, March 21–25, 2011; Dallas, Texas
Abstract: K1.00163 : Investigation of spin torque driven magnetization reversal in elliptical elements
Author:
Spin transfer torque [1, 2] can be utilized to switch the
magnetization in
small ferromagnetic elements, which can be used to implement a
magnetic
random access memory [3]. One crucial parameter for spin torque
switching is
the critical current required to achieve switching. To
investigate spin
transfer torque we simulate the magnetization dynamics using our
Matlab
based micromagnetic code (M$^{3})$, which uses a fast Fourier
transform
method to evaluate the longrange magnetostatic field, exchange
interaction
is implemented using 6, 12 or 26 neighbor methods [4] and also
includes
adiabatic and non-adiabatic spin torque terms. We have performed
simulations
using different mesh sizes to examine the influence of the cell
size on the
micromagnetic results. We have investigated the influence of the
current
density and pinned layer orientation on the magnetization
dynamics and in
particular on the switching time. \\[4pt]
[1] J. Slonczewski, J. Mag. Mag. Mat. \textbf{159}, 1 (1996).
\newline
[2] L. Berger, Phys. Rev. B \textbf{54}, 9353 (1996). \newline
[3] E. Chen et al., IEEE Trans. Mag. \textbf{46}, 1873-1878 (2010).
\newline
[4] M.J. Donahue, D.G. Porter, Physica B \textbf{343}, 177 (2004).
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.K1.163
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