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arXiv · 0902.2200

Kondo effect in transport through Aharonov-Bohm and Aharonov-Casher interferometers

A. M. Lobos·A. A. Aligia
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Abstract

We derive the extension of the Hubbard model to include Rashba spin-orbit coupling that correctly describes Aharonov-Bohm and Aharonov-Casher phases in a ring under applied magnetic and electric fields. When the ring is connected to conducting leads, we develop a formalism that is able to describe both, Kondo and interference effects. We find that in the Kondo regime, the spin-orbit coupling reduces strongly the conductance from the unitary limit. This effect in combination with the magnetic flux, can be used to produce spin polarized carriers.

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A. M. Lobos, A. A. Aligia. 2009-02-12. Kondo effect in transport through Aharonov-Bohm and Aharonov-Casher interferometers. https://doi.org/10.1016/j.physb.2009.07.093

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