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Proceedings Paper

Whether acoustic mismatch theory holds for the fast bolometric response of YBaCuO films
Author(s): Alex D. Semenov; A. V. Sergeev; Pavel B. Kouminov; Eugeni M. Gershenzon; M. A. Heusinger; Rainer S. Nebosis; Karl F. Renk
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Paper Abstract

The transmission probability of the interface between YBaCuO film and different substrates for thermal phonons incident both from the film and from the substrate are obtained from photoresponse measurements performed at the transition temperature of YBaCuO. The experimental values are compared with the predictions of the acoustic mismatch model and the diffusive mismatch model taking account of optical phonon modes as well as the difference between the speed of sound and the group velocity of acoustic phonons. Although absolute values of transmission probabilities derived from these two models are close to each other, the experimental data rather indicate the validity of the acoustic mismatch model.

Paper Details

Date Published: 20 May 1994
PDF: 8 pages
Proc. SPIE 2159, High-Temperature Superconducting Detectors: Bolometric and Nonbolometric, (20 May 1994); doi: 10.1117/12.176152
Show Author Affiliations
Alex D. Semenov, Moscow State Pedagogical Univ. (Russia)
A. V. Sergeev, Moscow State Pedagogical Univ. (Russia)
Pavel B. Kouminov, Moscow State Pedagogical Univ. (Russia)
Eugeni M. Gershenzon, Moscow State Pedagogical Univ. (Russia)
M. A. Heusinger, Univ. of Regensburg (Germany)
Rainer S. Nebosis, Univ. of Regensburg (Germany)
Karl F. Renk, Univ. of Regensburg (Germany)

Published in SPIE Proceedings Vol. 2159:
High-Temperature Superconducting Detectors: Bolometric and Nonbolometric
Michael Nahum; Jean-Claude Villegier, Editor(s)

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