Interplay between Josephson effect and magnetic interactions in double quantum dots

F. S. Bergeret, A. Levy Yeyati, and A. Martín-Rodero
Phys. Rev. B 74, 132505 – Published 23 October 2006

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.

    • Received 27 February 2006

    DOI:https://doi.org/10.1103/PhysRevB.74.132505

    ©2006 American Physical Society

    Authors & Affiliations

    F. S. Bergeret, A. Levy Yeyati, and A. Martín-Rodero

    • Departamento de Física Teórica de la Materia Condensada C-V, Universidad Autónoma de Madrid, E-28049 Madrid, Spain

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    Issue

    Vol. 74, Iss. 13 — 1 October 2006

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