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

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

2012-04-10

arxiv.org/abs/1204.2143v1

Physics

Condensed Matter

Strongly Correlated Electrons

11 pages, 13 figures

Scientific paper

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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