期刊
PHYSICAL REVIEW LETTERS
卷 105, 期 17, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.177201
关键词
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资金
- Deutsche Forschungsgemeinschaft [SFB 668, Graduiertenkolleg 1286]
- Free and Hanseatic City of Hamburg
We analytically determine the spatially varying spin-transfer torque within a domain wall. In the case of ballistic spin and diffusive charge transport, the spin-transfer torque as well as the local degree of nonadiabaticity oscillate within a domain wall. In narrow domain walls, the degree of nonadiabaticity ceases to be a constant material parameter but depends on the domain-wall width including a possible sign change, which is crucial for experiments and the technological utilization in spin-transfer-torque-based storage devices.
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