Spin-transfer pulse switching: From the dynamic to the thermally activated regime

D. Bedau, H. Liu, J. Z. Sun, J. A. Katine, E. E. Fullerton, S. Mangin, A. D. Kent

    Research output: Contribution to journalArticle

    Abstract

    The effect of thermal fluctuations on spin-transfer switching has been studied for a broad range of time scales (subnanoseconds to seconds) in a model system, a uniaxial thin film nanomagnet. The nanomagnet is incorporated into a spin-valve nanopillar, which is subject to spin-polarized current pulses of variable amplitude and duration. Two physical regimes are clearly distinguished: a long pulse duration regime, in which reversal occurs by spin-transfer assisted thermal activation over an energy barrier, and a short-time large pulse amplitude regime, in which the switching probability is determined by the spin-angular momentum in the current pulse.

    Original languageEnglish (US)
    Article number262502
    JournalApplied Physics Letters
    Volume97
    Issue number26
    DOIs
    StatePublished - Dec 27 2010

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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  • Cite this

    Bedau, D., Liu, H., Sun, J. Z., Katine, J. A., Fullerton, E. E., Mangin, S., & Kent, A. D. (2010). Spin-transfer pulse switching: From the dynamic to the thermally activated regime. Applied Physics Letters, 97(26), [262502]. https://doi.org/10.1063/1.3532960