Title :
The observation of the AC Josephson effect in a YBa2Cu 3O7/Au/YBa2Cu3O7 junction
Author :
Schwartz, D.B. ; Mankiewich, P.M. ; Howard, R.E. ; Jackel, L.D. ; Straughn, B.L. ; Burkhart, E.G. ; Dayem, A.H.
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
fDate :
3/1/1989 12:00:00 AM
Abstract :
The authors have demonstrated proximity effect coupling between a high-transition-temperature superconductor and a normal metal. In a device with a 1-μm long gap in a YBa2Cu3O7 film spanned by an Au shunt, the authors observed a DC supercurrent and the AC Josephson effect under microwave irradiation from 2 GHz to 15 GHz. Preliminary work has also begun with Ag shunts. It is concluded that these high quality S-N (superconductor-normal) interfaces should be applicable both to probing the superconducting state in oxide superconductors and to building high-Tc electronic devices
Keywords :
Josephson effect; barium compounds; gold; high-temperature superconductors; proximity effect; superconducting junction devices; yttrium compounds; 2 to 15 GHz; AC Josephson effect; DC supercurrent; YBa2Cu3O7-Au-YBa2Cu 3O7; high temperature superconductor; high-Tc electronic devices; microwave irradiation; proximity effect coupling; superconducting normal interfaces; Gold; High temperature superconductors; Josephson effect; Josephson junctions; SQUIDs; Superconducting films; Superconducting materials; Superconducting microwave devices; Superconducting transition temperature; Superconducting transmission lines;
Journal_Title :
Magnetics, IEEE Transactions on
