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

Wang, H.; Wang, J.; Tian, M.; Bell, L.; Hutchinson, E.; Rosario, M.M.; Liu, Y.; Amma, A.; Mallouk, T.
June 2004
Applied Physics Letters;6/21/2004, Vol. 84 Issue 25, p5171
Academic Journal
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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