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arXiv · 1204.2143

Interplay of Coulomb interaction and spin-orbit effects in multi-level quantum dots

S. Grap·V. Meden·S. Andergassen
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Abstract

We study electron transport through a multi-level quantum dot with Rashba spin-orbit interaction in the presence of local Coulomb repulsion. Motivated by recent experiments, we compute the level splitting induced by the spin-orbit interaction at finite Zeeman fields $B$, which provides a measure of the renormalized spin-orbit energy. This level splitting is responsible for the suppression of the Kondo ridges at finite $B$ characteristic for the multi-level structure. In addition, the dependence of renormalized $g$-factors on the relative orientation of the applied $B$ field and the spin-orbit direction following two different protocols used in experiments is investigated.

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S. Grap, V. Meden, S. Andergassen. 2012-04-10. Interplay of Coulomb interaction and spin-orbit effects in multi-level quantum dots. https://doi.org/10.1103/physrevb.86.035143

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