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Published on: December 11, 2013
Investigation of superconductivity in electrochemically fabricated AuSn nanowires
Nitesh Kumar1, M L Tian, J G Wang
1Center for Nanoscale Science, Pennsylvania State University, University Park, PA 16802, USA. Department of Physics, Pennsylvania State University, University Park, PA 16802, USA.
Abstract:
We have fabricated intermetallic AuSn nanowires by electrochemical deposition in porous polycarbonate membranes. By controlling the deposition parameters, nanowires of a single intermetallic phase, namely AuSn, can be fabricated. AuSn nanowires are found to be crystalline and fairly resistant to oxidation. Electrical transport measurements on arrays of nanowires showed a superconducting transition temperature, T(c)∼1.5 K. In addition, four-probe measurements were made on individual freestanding nanowires with electrodes formed by a focused ion beam (FIB). Results from the two sets of measurements are found to be in close agreement.
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