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Metallic contacts with individual Ru nanowires prepared by electrochemical deposition and the suppression of superconductivity in ultrasmall Ru grains

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9 Author(s)
Wang, H. ; Department of Physics and Center for Nanoscale Science, The Pennsylvania State University, University Park, Pennsylvania 16802 ; Wang, J. ; Tian, M. ; Bell, L.
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Nanowires of Ru are a promising candidate for studying the intrinsic behavior of individual one-dimensional superconducting wires. We have prepared Ru nanowires by electrochemical deposition in porous polycarbonate membranes and characterized them structurally by high-resolution transmission electron microscopy and electron diffraction. Ru wires with diameters of 50 and 100 nm were found to be polycrystalline, consisting of ultrasmall Ru grains with a typical size of 2 nm. Metallic contacts to arrays of Ru nanowire as well as individual wires were made. Electrical transport measurements showed that these wires were metallic, but not superconducting down to 0.3 K.

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Applied Physics Letters  (Volume:84 ,  Issue: 25 )