Interplay between Josephson effect and magnetic interactions in double quantum dots

Details Interplay between Josephson effect and magnetic interactions in double quantum dots Interplay between Josephson effect and magnetic interactions in double quantum dots

2006-03-13

arxiv.org/abs/cond-mat/0603357v1

Phys. Rev. B 74, 132505 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevB.74.132505

We analyze the magnetic and transport properties of a double quantum dot coupled to superconducting leads. In addition to the possible phase transition to a $\pi$ state, already present in the single dot case, this system exhibits a richer magnetic behavior due to the competition between Kondo and inter-dot antiferromagnetic coupling. We obtain results for the Josephson current which may help to understand recent experiments on superconductor-metallofullerene dimer junctions. We show that in such a system the Josephson effect can be used to control its magnetic configuration.

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