Odd-triplet superconductivity in single-level quantum dots
Abstract
We study the interplay of spin and charge coherence in a single-level quantum dot. A tunnel coupling to a superconducting lead induces superconducting correlations in the dot. With full spin symmetry retained, only even-singlet superconducting correlations are generated. An applied magnetic field or attached ferromagnetic leads partially or fully reduce the spin symmetry, and odd-triplet superconducting correlations are generated as well. For single-level quantum dots, no other superconducting correlations are possible. We analyze, with the help of a diagrammatic real-time technique, the interplay of spin symmetry and superconductivity and its signatures in electronic transport, in particular current and shot noise.
Cite
@article{arxiv.1707.01791,
title = {Odd-triplet superconductivity in single-level quantum dots},
author = {S. Weiss and J. König},
journal= {arXiv preprint arXiv:1707.01791},
year = {2017}
}
Comments
(replaced by accepted version)