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Fabrication and superconducting properties of nanostructured SFS contacts

Sürgers, Christoph; Hoss, Tilman; Schönenberger, Christian; Strunk, Christoph

Superconducting hybrid structures of submicrometer size utilizing high-melting transition metals such as Nb or Ta can be fabricated in ultra-high vacuum by means of a non-organic evaporation mask (Si3N4) of high thermal and mechanical stability. We report on the magnetic and superconducting properties of mesoscopic superconductor/ferromagnet/superconductor (SFS) junctions realized in a Nb/Cu/Co/Cu/Nb multilayer (ML). Below the superconducting transition temperature, the magnetic hysteresis loop shows a contribution from the strongly pinned magnetic flux of the superconducting Nb layers. Electrical transport measurements perpendicular to the layered structure clearly demonstrate a Josephson coupling between the Nb layers through the 5-nm thick ferromagnetic Co film.

DOI: 10.1016/S0304-8853(01)00862-9
Zitationen: 24
Web of Science
Zitationen: 23
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2002
Sprache Englisch
Identifikator ISSN: 0304-8853
KITopen-ID: 20912002
Erschienen in Journal of magnetism and magnetic materials
Band 240
Heft 1-3
Seiten 598-600
Schlagwörter Electronic transport, Mesoscopic systems, Proximity effect
Nachgewiesen in Web of Science
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