Journal
PHYSICAL REVIEW LETTERS
Volume 105, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.056601
Keywords
-
Categories
Funding
- German Science Foundation (DFG) [SFB 767, KL 1811]
- EU [RTN Spinswitch MRTN-CT-2006-035327, Stg MASPIC ERC-2007-Stg 208162, Stg NEWSPIN ERC-2007-Stg 201350]
- Samsung Advanced Institute of Technology
Ask authors/readers for more resources
Using transmission electron microscopy, we investigate the thermally activated motion of domain walls (DWs) between two positions in Permalloy (Ni(80)Fe(20)) nanowires at room temperature. We show that this purely thermal motion is well described by an Arrhenius law, allowing for a description of the DW as a quasiparticle in a one-dimensional potential landscape. By injecting small currents, the potential is modified, allowing for the determination of the nonadiabatic spin torque: beta(t) = 0.010 +/- 0.004 for a transverse DW and beta(v) = 0.073 +/- 0.026 for a vortex DW. The larger value is attributed to the higher magnetization gradients present.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available