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Interplay between Josephson effect and magnetic interactions in double quantum dots

F. S. Bergeret·A. Levy Yeyati·A. Martin-Rodero
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Abstract

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 $π$ 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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F. S. Bergeret, A. Levy Yeyati, A. Martin-Rodero. 2006-03-13. Interplay between Josephson effect and magnetic interactions in double quantum dots. https://doi.org/10.1103/physrevb.74.132505

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