Tian Mingliang, Kumar Nitesh, Xu Shengyong, Wang Jinguo, Kurtz James S, Chan M H W
The Center for Nanoscale Science and Department of Physics, The Pennsylvania State University, University Park, 16802-6300, USA.
Phys Rev Lett. 2005 Aug 12;95(7):076802. doi: 10.1103/PhysRevLett.95.076802. Epub 2005 Aug 8.
Transport measurements were made on a system consisting of a zinc nanowire array sandwiched between two bulk superconducting electrodes (Sn or In). It was found that the superconductivity of Zn nanowires of 40 nm diameter is suppressed either completely or partially by the superconducting electrodes. When the electrodes are driven into their normal state by a magnetic field, the nanowires switch back to their superconducting state. This phenomenon is significantly weakened when one of the two superconducting electrodes is replaced by a normal metal. The phenomenon is not seen in wires with diameters equal to or thicker than 70 nm.
