Journal
APPLIED PHYSICS EXPRESS
Volume 3, Issue 8, Pages -Publisher
JAPAN SOC APPLIED PHYSICS
DOI: 10.1143/APEX.3.083002
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Funding
- European Science Foundation
- Engineering and Physical Sciences Research Council
- Spanish Ministry of Science and Innovation [2008-0352]
- EPSRC [EP/G005176/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G005176/1] Funding Source: researchfish
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The dependence of threshold current on applied magnetic field for domain wall depinning from a pinning potential in Gd doped permalloy wires is measured using pulsed current measurements By increasing the Gd concentration we find a marked reduction in threshold currents This is shown to arise due to the enhanced non-adiabatic spin-transfer torque we calculate the non-adiabaticity parameter beta to be around 0 11 for 10% Gd concentration On the other hand we show that the adiabatic spin-transfer torque is largely unaffected by Gd concentrations up to 10% (C) 2010 The Japan Society of Applied Physics
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