Spin torque from tunneling through impurities in a magnetic tunnel junction

ORAL

Abstract

We study impurity-mediated transport in a magnetic tunnel junction (MTJ) in the sequential tunneling regime. We address the conductance of the MTJ as well as the spin transfer torque. We show that the torque from impurity-mediated tunneling can be distinguished from that from direct tunneling through its dependence on the barrier thickness and the angle between the ferromagnetic moments.

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Authors

  • Turan Birol

    • Cornell University

  • Piet Brouwer

    • Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY 14853-2501, USA
    • LASSP, Cornell University
    • Cornell University