Josephson Current in a Quantum Dot in the Kondo Regime Connected to Two Superconductors

Details Josephson Current in a Quantum Dot in the Kondo Regime Connected to Two Superconductors Josephson Current in a Quantum Dot in the Kondo Regime Connected to Two Superconductors

2001-06-26

arxiv.org/abs/cond-mat/0106532v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 .eps figures

Scientific paper

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. We show that, for small values of the superconducting gap, Kondo correlations and superconductivity cooperate to enhance the Josephson current. As the superconducting gap increases, the current changes sign and the system becomes a $\pi$-junction. The $\pi$-junction behavior sets in much before antiferromagnetic correlations at the dot can be treated perturbatively.

Affiliated with

Also associated with

No associations

Rating

Josephson Current in a Quantum Dot in the Kondo Regime Connected to Two Superconductors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Josephson Current in a Quantum Dot in the Kondo Regime Connected to Two Superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Josephson Current in a Quantum Dot in the Kondo Regime Connected to Two Superconductors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-641763