Please use this identifier to cite or link to this item:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE

Invite to open peer review

Charge transport through spin-polarized tunnel junction between two spin-split superconductors

AuthorsRouco, Mikel CSIC ORCID; Chakraborty, S.; Aikebaier, F.; Golovach, V. N. CSIC ORCID; Strambini, Elia; Moodera, J. S.; Giazotto, Francesco; Heikkilä, T. T.; Bergeret, F. S. CSIC ORCID
Issue Date4-Nov-2019
PublisherAmerican Physical Society
CitationPhysical Review B 100: 184501 (2019)
AbstractWe investigate transport properties of junctions between two spin-split superconductors linked by a spin-polarized tunneling barrier. The spin-splitting fields in the superconductors (S) are induced by adjacent ferromagnetic insulating (FI) layers with arbitrary magnetization. The aim of this study is twofold. On the one hand, we present a theoretical framework based on the quasiclassical Green's functions to calculate the Josephson and quasiparticle current through the junctions in terms of the different parameters characterizing it. Our theory predicts qualitative new results for the tunneling differential conductance, dI/dV, when the spin-splitting fields of the two superconductors are noncollinear. We also discuss how junctions based on FI/S can be used to realize anomalous Josephson junctions with a constant geometric phase shift in the current-phase relation. As a result, they may exhibit spontaneous triplet supercurrents in the absence of a phase difference between the S electrodes. On the other hand, we show results of planar tunneling spectroscopy of a EuS/Al/AlOx/EuS/Al junction and use our theoretical model to reproduce the obtained dI/dV curves. Comparison between theory and experiment reveals information about the intrinsic parameters of the junction, such as the size of the superconducting order parameter, spin-splitting fields and spin relaxation, and also about properties of the two EuS films, such as their morphology, domain structure, and magnetic anisotropy.
Publisher version (URL)
Identifiersdoi: 10.1103/PhysRevB.100.184501
e-issn: 2469-9969
issn: 2469-9950
Appears in Collections:(CFM) Artículos

Files in This Item:
File Description SizeFormat
Charge_transport.pdf624,9 kBAdobe PDFThumbnail
Show full item record

CORE Recommender


checked on May 20, 2024


checked on Feb 25, 2024

Page view(s)

checked on May 24, 2024


checked on May 24, 2024

Google ScholarTM




WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.