Josephson current through a quantum dot with spin-orbit coupling

L. Dell'Anna (1) , A. Zazunov (2) , R. Egger (1) , T. Martin (3)

1 Insitut fur Theoretische Physik I
2 LPM2C - Laboratoire de physique et modélisation des milieux condensés
3 CPT - Centre de Physique Théorique - UMR 6207

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.

Mots clés: rashba; spin orbit; Josephson effect; pi junction

Domaines: Autre [cond-mat.other]

L. Dell'Anna, A. Zazunov, R. Egger, T. Martin. Josephson current through a quantum dot with spin-orbit coupling. 2006. ⟨hal-00102465⟩