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Density of states and supercurrent in diffusive SNS junctions : role of nonidealinterfaces and spin-flip scattering

Density of states and supercurrent in diffusive SNS junctions : role of nonidealinterfaces and spin-flip scattering

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HAMMER, Jan, Juan Carlos CUEVAS, Sebastian BERGERET, Wolfgang BELZIG, 2007. Density of states and supercurrent in diffusive SNS junctions : role of nonidealinterfaces and spin-flip scattering

@unpublished{Hammer2007Densi-4764, title={Density of states and supercurrent in diffusive SNS junctions : role of nonidealinterfaces and spin-flip scattering}, year={2007}, doi={10.1103/PhysRevB.76.064514}, author={Hammer, Jan and Cuevas, Juan Carlos and Bergeret, Sebastian and Belzig, Wolfgang} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/4764"> <dc:creator>Hammer, Jan</dc:creator> <dc:language>eng</dc:language> <dc:creator>Bergeret, Sebastian</dc:creator> <dcterms:abstract xml:lang="eng">We present a theoretical study of the density of states and supercurrent in diffusive superconductor-normal metal-superconductor (SNS) junctions. In particular, we study the influence on these two equilibrium properties of both an arbitrary transparency of the SN interfaces and the presence of spin-flip scattering in the normal wire. We show that the minigap that is present in the spectrum of the diffusive wire is very sensitive to the interface transmission. More importantly, we show that at arbitrary transparency the minigap replaces the Thouless energy as the relevant energy scale for the proximity effect, determining for instance the temperature dependence of the critical current. We also study in detail how the critical current is suppressed by the effect of spin-flip scattering, which can be due to either magnetic impurities or, under certain circumstances, to an external magnetic field. Our analysis based on the quasiclassical theory of diffusive superconductors can be very valuable to establish quantitative comparisons between experiment and theory.</dcterms:abstract> <dc:rights>deposit-license</dc:rights> <dc:creator>Belzig, Wolfgang</dc:creator> <dcterms:rights rdf:resource="https://creativecommons.org/licenses/by-nc-nd/2.0/legalcode"/> <dc:format>application/pdf</dc:format> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/4764"/> <dc:contributor>Cuevas, Juan Carlos</dc:contributor> <dc:creator>Cuevas, Juan Carlos</dc:creator> <dcterms:title>Density of states and supercurrent in diffusive SNS junctions : role of nonidealinterfaces and spin-flip scattering</dcterms:title> <dcterms:issued>2007</dcterms:issued> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T14:50:09Z</dcterms:available> <dc:contributor>Bergeret, Sebastian</dc:contributor> <dc:contributor>Hammer, Jan</dc:contributor> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T14:50:09Z</dc:date> <dc:contributor>Belzig, Wolfgang</dc:contributor> </rdf:Description> </rdf:RDF>

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