期刊
APPLIED PHYSICS LETTERS
卷 95, 期 16, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3238314
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资金
- DFG [SFB 767, KL1811]
- Landesstiftung Baden Wurtternberg
- European Research Council [ERC-2007-Stg 208162]
- EU RTN SPINSWITCH [MRTN-CT-2006-035327]
- Samsung Advanced Institute of Technology
We theoretically study domain wall oscillations upon the injection of a dc current through a geometrically constrained wire with perpendicular magnetic anisotropy. The frequency spectrum of the oscillation can be tuned by the injected current density and additionally by the application of an external magnetic field. Our analytical calculations are supported by micromagnetic simulations based on the Landau-Lifshitz-Gilbert equation. The simple concept of our localized steady-state oscillator might prove useful as a nanoscale microwave generator with possible applications in telecommunications or for rf-assisted writing in magnetic hard drives. (C) 2009 American Institute of Physics. [doi:10.1063/1.3238314]
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