Josephson current through a quantum dot with spin-orbit coupling

Abstract

The equilibrium Josephson current through a nanoscale multi-level quantum dot with Rashba or Dresselhaus spin-orbit coupling $\alpha$ has been computed. The critical current can be drastically modified already by moderate $\alpha$. In the presence of a Zeeman field, Datta-Das-like oscillatory dependencies on $\alpha$ are predicted.

10 pages, 4 figures, final version, accepted for publication in PRB

References in corpus (13)

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• Supercurrent reversal in quantum dots
• Coulomb blockade at almost perfect transmission
• Quantum transport theory for nanostructures with Rashba spin-orbital interaction
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• Andreev quantum dots for spin manipulation
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• Influence of the Rashba effect on the Josephson current through a superconductor/Luttinger liquid/superconductor tunnel junction
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• Spin-Hall effects in a Josephson contact
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• Differential Conductance Anomaly in Superconducting Quantum Point Contacts
• Zero-phase-difference Josephson current based on spontaneous symmetry-breaking via parametric excitation of a movable superconducting dot
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