TY - JOUR
T1 - Domain wall oscillations induced by spin torque in magnetic nanowires
AU - Sbiaa, R.
AU - Chantrell, R. W.
N1 - Publisher Copyright:
© 2015 AIP Publishing LLC.
PY - 2015/2/7
Y1 - 2015/2/7
N2 - Using micromagnetic simulations, the effects of the non-adiabatic spin torque (β) and the geometry of nanowires on domain wall (DW) dynamics are investigated. For the case of in-plane anisotropy nanowire, it is observed that the type of DW and its dynamics depends on its dimension. For a fixed length, the critical switching current decreases almost exponentially with the width W, while the DW speed becomes faster for larger W. For the case of perpendicular anisotropy nanowire, it was observed that DW dynamics depends strongly on β. For small values of β, oscillations of DW around the center of nanowire were revealed even after the current is switched off. In addition to nanowire geometry and intrinsic material properties, β could provide a way to control DW dynamics.
AB - Using micromagnetic simulations, the effects of the non-adiabatic spin torque (β) and the geometry of nanowires on domain wall (DW) dynamics are investigated. For the case of in-plane anisotropy nanowire, it is observed that the type of DW and its dynamics depends on its dimension. For a fixed length, the critical switching current decreases almost exponentially with the width W, while the DW speed becomes faster for larger W. For the case of perpendicular anisotropy nanowire, it was observed that DW dynamics depends strongly on β. For small values of β, oscillations of DW around the center of nanowire were revealed even after the current is switched off. In addition to nanowire geometry and intrinsic material properties, β could provide a way to control DW dynamics.
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U2 - 10.1063/1.4906438
DO - 10.1063/1.4906438
M3 - Article
AN - SCOPUS:84923675411
SN - 0021-8979
VL - 117
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 5
M1 - 053907
ER -