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dc.contributor.authorCosceev, Alexandr-
dc.contributor.authorSuergers, Christoph-
dc.contributor.authorBOYEN, Hans-Gerd-
dc.contributor.authorSchweiss, Peter-
dc.contributor.authorv Loehneysen, Hilbert-
dc.identifier.citationPHYSICAL REVIEW B, 83(17)-
dc.description.abstractThe electronic transport in very thin Pd films deposited on insulating EuxSr1-xS (0 <= x <= 1) is investigated. The temperature dependent resistance R(T) of films with d(Pd) >= 14 nm shows metallic behavior and a logarithmic increase toward low temperatures characteristic of (anti-)localization and electron-electron interaction effects also observed for Pd films on Si(111). Films with d(Pd) = 7 nm are superconducting below a transition temperature T-c which decreases with increasing Eu concentration from T-c = 0.9 K for x = 0 to T-c < 50 mK for x = 1. The origin of superconductivity in the thin Pd films is presumably due to the formation of an interfacial Pd-S alloy and/or to a charge transfer at the Pd/EuxSr1-xS interface. The decrease of T-c vs x is attributed to the magnetic pair breaking of the ferromagnetic EuxSr1-xS underneath. The R(T) behavior of films with d(Pd) >= 10 nm suggests that these are not superconducting or have a strongly reduced Tc presumably due to the proximity effect of the nonsuperconducting S-free upper part of the Pd film.-
dc.description.sponsorshipWe thank C. Pfleiderer for performing the measurements in the dilution refrigerator and A. Bottcher for sample characterization. This work was partly supported by the DFG Center for Functional Nanostructures (CFN) and the Federal Belgium Interuniversity Attraction Poles Program VI - 'Quantum effects in clusters and nanowires'.-
dc.publisherAMER PHYSICAL SOC-
dc.titleSuperconducting state of very thin Pd films deposited on a diluted insulating EuxSr1-xS ferromagnet-
dc.typeJournal Contribution-
dc.description.notes[Cosceev, Alexandr; Suergers, Christoph; v Loehneysen, Hilbert] Karlsruhe Inst Technol, Inst Phys, D-76049 Karlsruhe, Germany. [Cosceev, Alexandr; Suergers, Christoph; v Loehneysen, Hilbert] DFG Ctr Funct Nanostruct, D-76049 Karlsruhe, Germany. [Boyen, Hans-Gerd] Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium. [Schweiss, Peter; v Loehneysen, Hilbert] Karlsruhe Inst Technol, Inst Festkorperphys, D-76021 Karlsruhe, Germany.
item.accessRightsClosed Access-
item.fullcitationCosceev, Alexandr; Suergers, Christoph; BOYEN, Hans-Gerd; Schweiss, Peter & v Loehneysen, Hilbert (2011) Superconducting state of very thin Pd films deposited on a diluted insulating EuxSr1-xS ferromagnet. In: PHYSICAL REVIEW B, 83(17).-
item.fulltextNo Fulltext-
item.validationecoom 2012-
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