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Spin-orbit induced anisotropy in the tunneling magnetoresistance of magnetic tunnel junctions

A. Matos-Abiague·J. Fabian
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Abstract

The effects of the spin-orbit interaction on the tunneling magnetoresistance of magnetic tunnel junctions are investigated. A model in which the experimentally observed two-fold symmetry of the anisotropic tunneling magnetoresistance (TAMR) originates from the interference between Dresselhaus and Bychkov-Rashba spin-orbit couplings is formulated. Bias induced changes of the Bychkov-Rashba spin-orbit coupling strength can result in an inversion of the TAMR. The theoretical calculations are in good agreement with the TAMR experimentally observed in epitaxial Fe/GaAs/Au tunnel junctions.

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A. Matos-Abiague, J. Fabian. 2007-05-20. Spin-orbit induced anisotropy in the tunneling magnetoresistance of magnetic tunnel junctions. https://arxiv.org/abs/cond-mat/0702387

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