Fast nonlinear photoresponse of current biased thin‐film Bi2Sr2CaCu2O8 to pulsed far‐infrared radiation

URN to cite this document:: urn:nbn:de:bvb:355-epub-170657
DOI to cite this document:: 10.5283/epub.17065

Huggard, P. G. ; Schneider, G. ; O'Brien, T. P. ; Lemoine, P. ; Blau, W. ; Prettl, Wilhelm

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Date of publication of this fulltext: 18 Oct 2010 11:32

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Abstract

The response of a polycrystalline thin‐film Bi2Sr2CaCu2O8 superconducting stripe to short‐pulse far‐infrared (λ=447 μm) radiation is reported. Under constant current bias, a photosignal is generated when the maximum zero voltage current is exceeded. Measurements of the sensitivity as a function of temperature, bias current, and intensity reveal the signal source to be nonbolometric. The response ...