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Superconducting and magnetic properties of Ni/Pb multilayered nanowires

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6 Author(s)
Lin, L.K. ; Institute of Physics, Academia Sinica, Taipei 115, Taiwan, Republic of China ; Chi, Y.S. ; Chen, T.M. ; Shyu, S.-G.
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Nickel/lead multilayered nanowires were prepared using standard three-electrode electrodeposition into anodic aluminum oxide porous templates. The diameters of the nanowires ranged from 50 to 200 nm. By means of electric and magnetic measurements, we found that the superconducting transition temperature, Tc, of the Pb layer persisted down to the smallest diameter without any noticeable dimensional effect. Tc was affected by the relative orientation of magnetizations in neighboring Ni layers. When the superconducting layers were driven normal under a large magnetic field, unusual resistance increase was observed with decreasing temperature, which was consistent with the Kondo effect.

Published in:

Journal of Applied Physics  (Volume:105 ,  Issue: 7 )