Andreev spectrum of a Josephson junction with spin-split superconductors
BERCIOUX, D.
Ikerbasque - Basque Foundation for Science
Donostia International Physics Center [DIPC]
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Ikerbasque - Basque Foundation for Science
Donostia International Physics Center [DIPC]
BERCIOUX, D.
Ikerbasque - Basque Foundation for Science
Donostia International Physics Center [DIPC]
Ikerbasque - Basque Foundation for Science
Donostia International Physics Center [DIPC]
BERGERET, F. S.
Donostia International Physics Center [DIPC]
Centro de Fisica de Materiales [CFM-MPC]
< Reduce
Donostia International Physics Center [DIPC]
Centro de Fisica de Materiales [CFM-MPC]
Language
en
Article de revue
This item was published in
EPL - Europhysics Letters. 2016-09-01, vol. 115, n° 6, p. 67001 (1-6)
European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing
English Abstract
The Andreev bound states and charge transport in a Josephson junction between two superconductors with intrinsic exchange fields are studied. We find that for a parallel configuration of the exchange fields in the ...Read more >
The Andreev bound states and charge transport in a Josephson junction between two superconductors with intrinsic exchange fields are studied. We find that for a parallel configuration of the exchange fields in the superconductors the discrete spectrum consists of two pairs of spin-split states. The Josephson current in this case is mainly carried by bound states. In contrast, for the antiparallel configuration we find that there is no spin-splitting of the bound states and that for phase differences smaller than a certain critical value there are no bound states at all. Hence the supercurrent is only carried by states in the continuous part of the spectrum. Our predictions can be tested by performing a tunneling spectroscopy of a weak link between two spin-split superconductors.Read less <
English Keywords
Tunneling phenomena
Josephson effects
Mesoscopic and nanoscale systems
Spin polarized transport
Origin
Hal imported