Josephson response of a conventional and a noncentrosymmetric superconductor coupled via a double quantum dot
Björn Sothmann, Rakesh P. Tiwari
DOI 10.1103/PhysRevB.92.014504 · Physical Review B
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Abstract
We consider transport through a Josephson junction consisting of a conventional s-wave superconductor coupled via a double quantum dot to a noncentrosymmetric superconductor with both singlet and triplet pairing. We calculate the Andreev bound state energies and the associated Josephson current. We demonstrate that the current-phase relation is a sensitive probe of the singlet-triplet ratio in the noncentrosymmetric superconductor. In particular, in the presence of an inhomogeneous magnetic field the system exhibits a φ-junction behavior.
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