Mesoscopic Anisotropic Magnetoconductance Fluctuations in Ferromagnets

ORAL

Abstract

The conductance of a ferromagnetic particle depends on the relative orientation of the magnetization with respect to the direction of current flow. This phenomenon is known as ``anisotropic magnetoresistance.'' Quantum interference leads to an additional, random dependence of the conductance on the magnetization direction. These ``anisotropic magnetorestance fluctuations'' are caused by spin-orbit scattering, which couples the electron motion to the exchange field in the ferromagnet. We report a calculation of the dependence of the conductance autocorrelation function on the rotation angle of the magnetization direction.

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Authors

  • Shaffique Adam

  • Markus Kindermann

  • Saar Rahav

  • Piet W. Brouwer

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