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Proximity-induced superconductivity in Nb/Ag/Fe triple layers

Sürgers, Christoph 1; Stalzer, H. 1; Cosceev, A. 1; Löhneysen, Hilbert von 1
1 Center for Functional Nanostructures (CFN), Karlsruher Institut für Technologie (KIT)


In superconducting Nb/Ag double layers, a diamagnetic transition occurs in the magnetization at a temperature Tb below the transition temperature of Nb due to the proximity-induced superconductivity (PIS) in Ag. For triple layers, where Ag is squeezed between Nb and Fe, we. nd that for thick Ag layers with d(Ag) >= 550 nm the diamagnetic screening in Ag is suppressed by the proximity of Fe, as expected. Surprisingly, for small dAg the diamagnetic signal in Ag reappears due to the competing influence of PIS by the superconductor and pair breaking by the ferromagnet. (C) 2006 Elsevier B.V. All rights reserved.

Zugehörige Institution(en) am KIT Institut für Festkörperphysik (IFP)
Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2007
Sprache Englisch
Identifikator ISSN: 0304-8853
KITopen-ID: 1000050512
HGF-Programm 52.01.01 (POF I, LK 01) Elektr.Eigenschaften.Magnetismus u.SL
Erschienen in Journal of Magnetism and Magnetic Materials
Verlag North-Holland Publishing
Band 310
Heft 2, Suppl. Part 3
Seiten e767-e768
Nachgewiesen in Web of Science
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