Enhancement of Josephson photoresponse of granular high-T c superconductor thin films by deoxygenation | Zendy

Gi. Schneider | Zendy; Werner J. Blau | Zendy; E. Stangl | Zendy; D. Bäuerle | Zendy; P. G. Huggard | Zendy; W. Prettl | Zendy

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Enhancement of Josephson photoresponse of granular high-T c superconductor thin films by deoxygenation

Author(s) -

Gi. Schneider,

Werner J. Blau,

E. Stangl,

D. Bäuerle,

P. G. Huggard,

W. Prettl

Publication year - 1993

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.110300

Subject(s) - deoxygenation , josephson effect , superconductivity , bolometer , thin film , condensed matter physics , materials science , pi josephson junction , high temperature superconductivity , optoelectronics , physics , chemistry , nanotechnology , optics , catalysis , biochemistry , detector

The dependence of the far infrared Josephson photoresponse of current biased granular high‐Tc superconductor thin films on deoxygenation is presented. Bi2Sr2CaCu2O8 and TlBa2Ca2Cu3O9 thin films were heated in vacuum to temperatures of between 200 and 500 °C. The resulting deoxygenation weakens the intergrain coupling, thereby reducing the critical current and enhancing the photoresponse. In this way the optimum temperature for the fast Josephson response may be tuned to lie outside the temperature region of the slow bolometric signal

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