Josephson current through a nanoscale quantum dot contacted by conventional superconductors

Josephson current in a quantum dot in th

Josephson current in a quantum dot in the Kondo regime connected to two superconductors

✍ Gabriele Campagnano; Domenico Giuliano; Adele Naddeo; Arturo Tagliacozzo 📂 Article 📅 2004 🏛 Elsevier Science 🌐 English ⚖ 408 KB

We apply a Gutzwiller-like variational technique to study Josephson conduction across a quantum dot with an odd number of electrons connected to two superconducting leads. Our method projects out all states on the dot but the Kondo singlet and is valid when Kondo correlations are dominant and no And