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

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.

11 pages, 13 figures

References in corpus (11)

• Hybrid superconductor-semiconductor devices made from self-assembled SiGe nanocrystals on silicon
• A finite-frequency functional RG approach to the single impurity Anderson model
• A novel approach to transport through correlated quantum dots
• Mesoscopic to universal crossover of transmission phase of multi-level quantum dots
• Phase lapses in transmission through interacting two-level quantum dots
• Magnetic-Field Dependence of Tunnel Couplings in Carbon Nanotube Quantum Dots
• Kondo physics in transport through a quantum dot with Luttinger liquid leads
• Spin-polarized currents through interacting quantum wires with nonmagnetic leads
• Spin-orbit coupling effects in one-dimensional ballistic quantum wires
• Spin-orbit interaction and asymmetry effects on Kondo ridges at finite magnetic field
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Cited by in corpus (1)

• Adiabatic pumping through an interacting quantum dot with spin-orbit coupling