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Single superconducting thin film devices for applications in high Tc materials circuits

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6 Author(s)
Hohenwarter, G.K.G. ; Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA ; Martens, J.S. ; McGinnis, D.P. ; Beyer, J.B.
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The authors investigated several different devices based on regions of weak superconductivity and multiple parallel links in thin films. Devices were fabricated with Nb and YBa2Cu3O7-x films. Hysteretic symmetric and asymmetric I-V (current-voltage) curves have been observed. Flux flow was indicated. Device switching properties and the dependence of the flux-flow signature in the I-V curve on applied magnetic field were explored. Contrary to vortex flow devices based on Josephson junctions, the devices described here do not possess a tunnelling barrier and are made of only a single superconducting layer. Hence they should be applicable to electronic circuits based on high-Tc superconducting materials without the need for tunnel junctions

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Magnetics, IEEE Transactions on  (Volume:25 ,  Issue: 2 )