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Coulomb Promotion of Spin-Dependent Tunnelling

L. Y. Gorelik·S. I. Kulinich·R. I. Shekhter·M. Jonson·V. M. Vinokur
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Abstract

We study transport of spin-polarized electrons through a magnetic single-electron transistor (SET) in the presence of an external magnetic field. Assuming the SET to have a nanometer size central island with a single electron level we find that the interplay on the island between coherent spin-flip dynamics and Coulomb interactions can make the Coulomb correlations promote rather than suppress the current through the device. We find the criteria for this new phenomenon -- Coulomb promotion of spin-dependent tunnelling -- to occur.

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L. Y. Gorelik, S. I. Kulinich, R. I. Shekhter, M. Jonson, V. M. Vinokur. 2005-03-07. Coulomb Promotion of Spin-Dependent Tunnelling. https://doi.org/10.1103/physrevlett.95.116806

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