Projects per year
Abstract
We have studied field-and current-driven domain-wall (DW) creep motion in a perpendicularly magnetized Co/Pt multilayer wire by real-time Kerr microscopy. The application of a dc current of density of less than or similar to 10(7) A/cm(2) assisted only the DW creeping under field in the same direction as the electron flow, a signature of spin-transfer torque effects. We develop a model dealing with both bidirectional spin-transfer effects and Joule heating, with the same dynamical exponent mu = 1/4 for both field-and current-driven creep, and use it to quantify the spin-transfer efficiency as 3.6 +/- 0.6 Oe cm(2)/MA in our wires, confirming the significant nonadiabatic contribution to the spin torque.
Original language | English |
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Article number | 137205 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 104 |
Issue number | 13 |
Early online date | 1 Apr 2010 |
DOIs | |
Publication status | Published - 2 Apr 2010 |
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Dive into the research topics of 'Spin-transfer-torque-assisted domain-wall creep in a Co/Pt multilayer wire'. Together they form a unique fingerprint.Projects
- 2 Finished
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Current - Driven Domain Wall Motion in Artificial Magnetic Domain Structures
Engineering and Physical Sciences Research Council
1/05/09 → 31/01/13
Project: Research council
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ACCESS TO ELECTRON BEAM LITHOGRAPHY AT THE UNIVERSITY OF BATH
Engineering and Physical Sciences Research Council
1/11/07 → 30/04/12
Project: Research council