Abstract
The effects of the current-induced Oersted field and of a hard axis applied field on spin transfer torque (STT) switching have been investigated by performing LLG micromagnetic simulations including a STT term and Gaussian thermal fluctuations. In parallel to anti-parallel switching at large currents, the C-like micromagnetic configuration induced by the Oersted field plays an important role in STT switching. In anti-parallel to parallel switching at large currents, the Oersted field induces a complicated micromagnetic configuration with several vortices. In both cases, the magnetization deviates considerably from macrospin behaviour. However, a macrospin-like behaviour is restored when a hard axis field is present.
| Original language | English |
|---|---|
| Article number | S10 |
| Pages (from-to) | 1261-1267 |
| Number of pages | 7 |
| Journal | Journal of Physics D: Applied Physics |
| Volume | 40 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2007 Mar 7 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Acoustics and Ultrasonics
- Surfaces, Coatings and Films
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Ito, K., Devolder, T., Chappert, C., Carey, M. J., & Katine, J. A. (2007). Micromagnetic simulation on effect of oersted field and hard axis field in spin transfer torque switching. Journal of Physics D: Applied Physics, 40(5), 1261-1267. [S10]. https://doi.org/10.1088/0022-3727/40/5/S10