Enhancement of Josephson photoresponse of granular high‐Tc superconductor thin films by deoxygenation

URN to cite this document:: urn:nbn:de:bvb:355-epub-169532
DOI to cite this document:: 10.5283/epub.16953

Schneider, G. ; Blau, W. ; Stangl, E. ; Bäuerle, D. ; Huggard, P. G. ; Prettl, Wilhelm

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Date of publication of this fulltext: 04 Oct 2010 12:31

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Abstract

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 ...