Micromagnetic modeling with eddy current and current-induced spin torque effect.
In: Journal of Applied Physics, Jg. 98 (2005-12-15), Heft 12, S. 123902-123905
Online
academicJournal
Zugriff:
We present a micromagnetic model which incorporates eddy current and spin transfer torque effects due to the passage of a spin-polarized current in the current-perpendicular-to-plane (CPP) geometry. Eddy current effects are modeled by solving Faraday’s and Poisson’s equations self-consistently with the Landau-Lifshitz-Gilbert (LLG) equation, whereas spin transfer torque is modeled by including the Slonczewski spin torque term in the LLG equation. We consider a 50 nm cubic Co element, which forms the free layer of a pseudo-spin-valve structure. With a typical damping parameter of α=0.5, the eddy currents act to accelerate the magnetic reversal process. The spin torque effect can also assist the reversal process but at high current densities exceeding J ext =10 8 A/cm 2 onwards. At these current densities, spin transfer torque also causes a substantial reduction in the coercivity. [ABSTRACT FROM AUTHOR]
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Titel: |
Micromagnetic modeling with eddy current and current-induced spin torque effect.
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Autor/in / Beteiligte Person: | Wadhwa, P. ; Jalil, M. B. A. ; Tan, S. G. |
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Zeitschrift: | Journal of Applied Physics, Jg. 98 (2005-12-15), Heft 12, S. 123902-123905 |
Veröffentlichung: | 2005 |
Medientyp: | academicJournal |
ISSN: | 0021-8979 (print) |
DOI: | 10.1063/1.2142077 |
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