Current-induced magnetization reversal in terms of power dissipation

J. Cucchiara, Eric E. Fullerton, A. D. Kent, J. Z. Sun, Y. Henry, S. Mangin

    Research output: Contribution to journalArticlepeer-review


    Magnetization excitation and reversal induced by spin-transfer torques is described in terms of power received or dissipated in a macrospin system. This approach provides a clear and intuitive understanding of the effect of both applied magnetic fields and injected spin-polarized currents on magnetization reversal. It is illustrated by solving the case of magnetization reversal in a nanopillar spin valve with perpendicular magnetizations although the approach can be applied more generally. The appearance of critical currents below which spin-transfer torque is no longer efficient is explained by a break in the uniaxial symmetry of such structures.

    Original languageEnglish (US)
    Article number100405
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Issue number10
    StatePublished - Sep 21 2011

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics


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