Ultrafast spin-transfer switching in spin valve nanopillars with perpendicular anisotropy

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

    Research output: Contribution to journalArticle

    Abstract

    Spin-transfer switching with short current pulses has been studied in spin-valve nanopillars with perpendicularly magnetized free and reference layers. Magnetization switching with current pulses as short as 300 ps is demonstrated. The pulse amplitude needed to reverse the magnetization is shown to be inversely proportional to the pulse duration, consistent with a macrospin spin-transfer model. However, the pulse amplitude duration switching boundary depends on the applied field much more strongly than predicted by the zero temperature macrospin model. The results also demonstrate that there is an optimal pulse length that minimizes the energy required to reverse the magnetization.

    Original languageEnglish (US)
    Article number022514
    JournalApplied Physics Letters
    Volume96
    Issue number2
    DOIs
    StatePublished - 2010

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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  • Cite this

    Bedau, D., Liu, H., Bouzaglou, J. J., Kent, A. D., Sun, J. Z., Katine, J. A., Fullerton, E. E., & Mangin, S. (2010). Ultrafast spin-transfer switching in spin valve nanopillars with perpendicular anisotropy. Applied Physics Letters, 96(2), [022514]. https://doi.org/10.1063/1.3284515