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Near-field induced FIR Josephson-detection by c-axis-oriented YBa_2Cu_3O_7-delta-films

E. Zepezauer·A. Kalbeck·S. D. Ganichev·W. Korzenietz·W. Prettl
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Abstract

A novel approach to intrinsic Josephson-detection of far infrared radiation is reported utilizing near-zone field effects at electric contacts on c-axis oriented YBa_2Cu_3O_7-delta films. While only a bolometric signal was observed focusing the radiation far off the contacts on c-axis normal films, irradiating the edge of contacts yielded an almost wavelength independent fast signal showing the characteristic intensity dependence of Josephson-detection. The signal is attributed to a c-axis parallel component of the electric radiation field being generated in the near-zone field of diffraction at the metallic contact structures.

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E. Zepezauer, A. Kalbeck, S. D. Ganichev, W. Korzenietz, W. Prettl. 1999-09-11. Near-field induced FIR Josephson-detection by c-axis-oriented YBa_2Cu_3O_7-delta-films. https://arxiv.org/abs/cond-mat/9909151

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