Rapid domain wall motion in permalloy nanowires excited by a spin-polarized current applied perpendicular to the nanowire.
We study domain wall dynamics in Permalloy nanowires excited by alternating spin-polarized current applied perpendicular to the nanowire. Spin torque ferromagnetic resonance measurements reveal that domain wall oscillations at a pinning site in the nanowire can be excited with velocities as high as 800 m/s at current densities below 10{7} A/cm{2}.
Boone
C T
CT
Department of Physics and Astronomy, University of California, Irvine, California 92697, USA.
Katine
J A
JA
Carey
M
M
Childress
J R
JR
Cheng
X
X
Krivorotov
I N
IN