Domain Wall Spin Torquemeter
Authors:
- P.-J. ZermattenPZP.-J. Zermatten
- G. GaudinGGG. Gaudin
- S. AuffretSAS. Auffret
- B. RodmacqBRB. Rodmacq
- A. SchuhlASA. Schuhl
- 30 March 2009
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 102 (13) , 137202
Abstract
We report the direct measurement of the nonadiabatic component of the spin torque in domain walls. Our method is independent of both the pinning of the domain wall in the wire as well as of the Gilbert damping parameter. We demonstrate that the ratio between the nonadiabatic and the adiabatic components can be as high as 1, and explain this high value by the importance of the spin-flip rate to the nonadiabatic torque. In addition to their fundamental significance these results open the way for applications by demonstrating a significant increase of the spin torque efficiency. DOI: http://dx.doi.org/10.1103/PhysRevLett.102.137202 © 2009 The American Physical SocietyKeywords
All Related Versions
This publication has 25 references indexed in Scilit:
- Current Driven Domain Wall Velocities Exceeding the Spin Angular Momentum Transfer Rate in Permalloy NanowiresPhysical Review Letters, 2007
- Nonlinear Domain-Wall Velocity Enhancement by Spin-Polarized Electric CurrentPhysical Review Letters, 2006
- Velocity of vortex walls moved by currentJournal of Applied Physics, 2006
- Controlled and Reproducible Domain Wall Displacement by Current Pulses Injected into Ferromagnetic Ring StructuresPhysical Review Letters, 2005
- Micromagnetic understanding of current-driven domain wall motion in patterned nanowiresEurophysics Letters, 2005
- Roles of Nonequilibrium Conduction Electrons on the Magnetization Dynamics of FerromagnetsPhysical Review Letters, 2004
- Domain wall motion by spin-polarized current: a micromagnetic studyJournal of Applied Physics, 2004
- Domain wall propagation in magnetic nanowires by spin-polarized current injectionEurophysics Letters, 2004
- Current-driven excitation of magnetic multilayersJournal of Magnetism and Magnetic Materials, 1996
- Exchange interaction between ferromagnetic domain wall and electric current in very thin metallic filmsJournal of Applied Physics, 1984