Current induced domain wall dynamics in the presence of spin orbit torques

Current induced domain wall (DW) motion in perpendicularly magnetized nanostripes in the presence of spin orbit torques is studied. We show using micromagnetic simulations that the direction of the current induced DW motion and the associated DW velocity depend on the relative values of the field li...

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Bibliographic Details
Published in:Journal of applied physics 2014-05, Vol.115 (17)
Main Authors: Boulle, O., Buda-Prejbeanu, L. D., Jué, E., Miron, I. M., Gaudin, G.
Format: Article
Language:English
Subjects:
Computer simulation
COMPUTERIZED SIMULATION
Condensed Matter
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
DOMAIN STRUCTURE
Domain walls
ELECTRIC CURRENTS
L-S COUPLING
MAGNETISM
NANOSCIENCE AND NANOTECHNOLOGY
NANOSTRUCTURES
Orbital mechanics
PHASE DIAGRAMS
Physics
SPIN
Spin dynamics
TORQUE
VELOCITY
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Summary:Current induced domain wall (DW) motion in perpendicularly magnetized nanostripes in the presence of spin orbit torques is studied. We show using micromagnetic simulations that the direction of the current induced DW motion and the associated DW velocity depend on the relative values of the field like torque (FLT) and the Slonczewski like torques (SLT). The results are well explained by a collective coordinate model which is used to draw a phase diagram of the DW dynamics as a function of the FLT and the SLT. We show that a large increase in the DW velocity can be reached by a proper tuning of both torques.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4860946