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Nonadiabatic Spin Transfer Torque in High Anisotropy Magnetic Nanowires with Narrow Domain Walls
- Source :
- Physical Review Letters, Physical Review Letters, 101(21):216601, 216601-1/4. American Physical Society
- Publication Year :
- 2008
-
Abstract
- Current induced domain wall (DW) depinning of a narrow DW in out-of-plane magnetized (Pt/Co)_{3}/Pt multilayer elements is studied by magnetotransport. We find that for conventional measurements Joule heating effects conceal the real spin torque efficiency and so we use a measurement scheme at a constant sample temperature to unambiguously extract the spin torque contribution. From the variation of the depinning magnetic field with the current pulse amplitude we directly deduce the large nonadiabaticity factor in this material and we find that its amplitude is consistent with a momentum transfer mechanism.
- Subjects :
- Physics
Condensed matter physics
Spin-transfer torque
General Physics and Astronomy
Joule
02 engineering and technology
Magnetic nanowires
021001 nanoscience & nanotechnology
01 natural sciences
Domain wall (magnetism)
0103 physical sciences
Domain (ring theory)
ddc:530
Current (fluid)
010306 general physics
0210 nano-technology
Anisotropy
Subjects
Details
- Language :
- English
- ISSN :
- 00319007
- Database :
- OpenAIRE
- Journal :
- Phys. Rev. Lett. 101, 216601
- Accession number :
- edsair.doi.dedup.....02f26eb26481936edf6b4b21bfb93d59
- Full Text :
- https://doi.org/10.1103/PhysRevLett.101.216601