Fabrication of heteroepitaxial YBa2Cu3O7−x-PrBa2Cu3O7−x-YBa2Cu3O7−x Josephson devices grown by laser deposition
- 6 November 1989
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 55 (19) , 2032-2034
- https://doi.org/10.1063/1.102340
Abstract
We have fabricated Josephson weak links from in situ laser‐deposited four‐layer structures of YBa2Cu3O7−x/PrBa2Cu3O7−x/YBa2Cu3O7−xAu. These devices show superconductor/normal‐metal/superconductor‐like current‐voltage characteristics with good areal scaling of both the critical currents Ic and resistances Rj, with IcRj≊3.5 mV. Constant‐voltage current steps observed in response to 84 GHz mm‐wave radiation and modulation of the dc supercurrent in a transverse magnetic field demonstrate that both the ac and dc Josephson effects occur in these devices.Keywords
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