Interplay between Josephson effect and magnetic interactions in double quantum dots
F. S. Bergeret, A. Levy Yeyati, A. Martín-Rodero
DOI 10.1103/PhysRevB.74.132505 · Physical Review B
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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 interdot 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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