Hysteretic YBa2Cu3O7-δ-Au-YBa2Cu3O7-δ proximity effect Josephson junctions

Kirk, K.J., Donaldson, G.B., Bowman, R.M., Cochran, A. , Edwards, J.A., Chew, N.G. and Satchell, J.S. (1993) Hysteretic YBa2Cu3O7-δ-Au-YBa2Cu3O7-δ proximity effect Josephson junctions. IEEE Transactions on Applied Superconductivity, 3(1), pp. 2393-2396. (doi:10.1109/77.233420)

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Abstract

The superconducting proximity effect can be used to produce Josephson junctions in high temperature superconducting structures with a normal conducting barrier. We describe work on ‘edge-microbridge’ junctions made by defining 10-30 pm wide Au bridges to link the upper and lower layers of a YBa2Cu3O7-δ-Au-YBa2Cu3O7-δ trilayer. The structures are patterned by photolithography and ion milling from multilayers grown in situ by electron-beam evaporation. Our best junctions operate up to around 20 K, exhibit hysteresis in their current-voltage characteristics and have an I,R, greater than 200 pV at 4.2 K.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cochran, Professor Alexander
Authors: Kirk, K.J., Donaldson, G.B., Bowman, R.M., Cochran, A., Edwards, J.A., Chew, N.G., and Satchell, J.S.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:IEEE Transactions on Applied Superconductivity
Publisher:IEEE
ISSN:1051-8223
ISSN (Online):1558-2515

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