Nonlinear Domain-Wall Velocity Enhancement by Spin-Polarized Electric Current
- 4 August 2006
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 97 (5), 057203
- https://doi.org/10.1103/physrevlett.97.057203
Abstract
The interaction between a dc spin-polarized electric current and a magnetic domain wall in a Permalloy nanowire was studied by high-bandwidth scanning Kerr polarimetry. The full functional dependence of wall velocity on electric current and magnetic field is presented. With the pinning potential nulled by a field, current-induced velocity enhancements exceeded at a current density of . This large enhancement, more than 10 times that found in pinning-dominated experiments, results in part from an interaction that is nonlinear in current and independent of current direction.
Keywords
This publication has 24 references indexed in Scilit:
- Real-Space Observation of Current-Driven Domain Wall Motion in Submicron Magnetic WiresPhysical Review Letters, 2004
- Domain wall propagation in magnetic nanowires by spin-polarized current injectionEurophysics Letters, 2004
- Magnetic domain wall motion triggered by an electric currentApplied Physics Letters, 2003
- Domain wall motion induced by spin polarized currents in ferromagnetic ring structuresApplied Physics Letters, 2003
- Current-controlled bi-stable domain configurations in Ni81Fe19 elements: An approach to magnetic memory devicesApplied Physics Letters, 2002
- Pulsed-current-induced domain wall propagation in Permalloy patterns observed using magnetic force microscopeIEEE Transactions on Magnetics, 2000
- Exchange forces between domain wall and electric current in permalloy films of variable thicknessJournal of Applied Physics, 1988
- Observation of s-d exchange force between domain walls and electric current in very thin Permalloy filmsJournal of Applied Physics, 1985
- Exchange interaction between ferromagnetic domain wall and electric current in very thin metallic filmsJournal of Applied Physics, 1984
- Dragging of domains by an electric current in very pure, non-compensated, ferromagnetic metalsPhysics Letters A, 1973