Huggard, P. G. and Schneider, G. and Richter, C. and Rickler, R. and Prettl, Wilhelm
Wavelength-dependent power-law Josephson photoresponse of a Tl2Ba2CaCu2O8 thin film.
Physical Review B (PRB) 49 (14), pp. 9949-9954.
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The Josephson photoresponse of a current biased granular Tl2Ba2CaCu2O8 thin film has been measured at 4.2 K for radiation frequencies ω in the range 20–111 cm-1. The resulting photosignal s depends nonlinearly on the incident power P satisfying the relationship s=K(ω)Pα(ω), where K is a frequency-dependent constant. The value of α increases monotonically from 0.5 at 20.2 cm-1 to 0.9 at 111 cm-1. ...
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