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Using ion irradiation to make high-Tc Josephson junctions

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7 Author(s)
Bergeal, N. ; Laboratoire de Physique Quantique, ESPCI-UPR5 CNRS, 10 Rue Vauquelin, 75231 Paris, France ; Lesueur, J. ; Sirena, M. ; Faini, G.
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In this article we describe the effect of ion irradiation on high-Tc superconductor thin film and its interest for the fabrication of Josephson junctions. In particular, we show that these alternative techniques allow to go beyond most of the limitations encountered in standard junction fabrication methods, both in the case of fundamental and technological purposes. Two different geometries are presented: a planar one using a single high-Tc film and a mesa one defined in a trilayer structure.

Published in:

Journal of Applied Physics  (Volume:102 ,  Issue: 8 )