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UHV compatible nanostructuring technique for mesoscopic hybrid devices: application to superconductor/ferromagnet Josephson contacts

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

We report on an ultra-high vacuum (UHV) compatible method for fabricating devices of sub-micrometer size by virtue of a non-organic evaporation mask of high thermal and mechanical stability. As an application we describe the superconducting properties of mesoscopic superconductor/normal-metal and superconductor/ferromagnet/superconductor hybrid structures. In particular, we report on the observation of the DC-Josephson effect in Nb/Cu/Co/Cu/Nb structures prepared in UHV. The Josephson coupling between the two superconductors through the very thin (5 nm) magnetic and metallic weak link is confirmed by the magnetic field dependence of the critical current Ic, which displays a Fraunhofer-like interference pattern.

DOI: 10.1016/S1386-9477(01)00168-0
Zitationen: 4
Web of Science
Zitationen: 4
Zitationen: 4
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2002
Sprache Englisch
Identifikator ISSN: 1386-9477
KITopen-ID: 20672002
Erschienen in Physica E: Low-Dimensional Systems and Nanostructures
Verlag North-Holland
Band 14
Heft 3
Seiten 341-345
Schlagwörter Hybrid devices, Josephson contacts, Nanostructuring
Nachgewiesen in Scopus
Web of Science
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