Influence of the contact resistance of the YBCO/Au interface on the transport and microwave properties of arrays of high-temperature Josephson junctions
Pestov E. E.1,2, Levichev M. Yu. 1, Masterov D. V. 1, Parafin A. E.1, Pavlov S. A.1, Khorshev S. K.3, Rogozhkina N. V. 3
1Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, Russia
2Lobachevsky State University, Nizhny Novgorod, Russia
3Nizhny Novgorod Research and Production Association named after M. V. Frunze, Nizhny Novgorod, Russia
Email: pestov@ipmras.ru

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The influence of the contact resistance of the interface of the YBCO/Au structure on the transport and microwave properties of arrays of high-temperature bicrystal Josephson junctions embedded in a coplanar transmission line has been studied. The current-voltage characteristics of Josephson structures fabricated using various technologies are studied: in situ and ex situ with annealing in an oxygen atmosphere. The results obtained can be used to create a quantum ac voltage generator based on high-temperature Josephson junctions. Keywords: high-temperature superconductors, Josephson junctions, microwave, contact resistance.
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