Regensburg 2013 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 12: Poster Session Superconductivity
TT 12.46: Poster
Montag, 11. März 2013, 15:00–19:00, Poster D
Proximity effect induced superconductivity in Cu- nanowires — •Maksym Kompaniiets1, Fabrizio Porrati1, Cornelia Neetzel2, Wolfgang Ensinger2, and Michael Huth1 — 1Physikalisches Institut, Goethe Universität, Frankfurt a. M — 2Fachbereich Materialwissenschaften, TU Darmstadt, Darmstadt
Proximity effect induced superconductivity occurs at the interface of a normal metal and a superconductor when Copper pairs leak into the metal. Depending on the microstructure of the normal metal, anomalies just above the temperature of the superconducting phase transition can be observed in the temperature-dependent resistivity. We have studied proximity induced superconductivity in Cu-nanowires in contact with an amorphous superconductor (W-C-Ga-O) prepared by focused ion beam induced deposition (FIBID) employing the precursor W(CO)6; contacts to the Cu-nanowires were made by using FIBID of Pt−C leads with the precursor MeCpPt(Me)3 in a dual-beam scanning electron/ion microscope. The nanowires have been prepared by electrochemical deposition in etched heavy-ion-track polycarbonate templates with diameters of 250 to 300 nm and lengths of 30 to 60 µm.