Vavra, Ondrej and Pfaff, Wolfgang and Strunk, Christoph (2009) Planar S-(S/F)-S Josephson junctions induced by the inverse proximity effect. Applied Physics Letters 95, p. 62501.
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Other URL: http://link.aip.org/link/?APPLAB/95/062501/1
We present a utilization of the inverse proximity effect in superconductor-ferromagnet (S-F) bilayer to generate lateral Josephson junctions. The weak link is created by a Pd0.95Fe0.05 strip across a Nb bridge. Close to TC and in perpendicular magnetic field the junctions exhibit a modulation of the critical current IC(B) similar to a Fraunhofer interference pattern which proves the dc Josephson effect. The structure contains three weak links (two different areas) in series which result in the observation of two periods scalable with the areas penetrated by magnetic flux. Measurements of Shapiro steps prove the presence of the ac Josephson effect.
|Institutions:||Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk|
|Keywords:||critical currents, ferromagnetic materials, interface magnetism, iron alloys, Josephson effect, magnetic flux, niobium, palladium alloys, proximity effect (superconductivity), superconducting junction devices, superconducting transition temperature|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||11 Feb 2010 08:23|
|Last Modified:||11 Feb 2010 08:23|
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