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Proceedings Paper

Optical response of superconducting YBa2Cu3O7-δ thin films and grain boundaries
Author(s): Santanu Bhattacharya; M. Rajeswari; Xiaoxing Xi; Qi Li; T. Venkatesan
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Paper Abstract

We have investigated the optical response of single grain-boundary weak-links in superconducting YBCO thin films. At the superconducting transition of a film containing a single grain-boundary weak-link we observed an enhanced optical response from the weak- link. Below the transition temperature, we measure the bias current and the temperature dependence of the optical response of the grain-boundary in the temperature range of 15 K < T < 80 K. Using a Resistively-Shunted-Junction model for the grain-boundary weak- link, we find that the optical response in this temperature range can be described by radiation induced thermal modulation of the critical currents.

Paper Details

Date Published: 20 May 1994
PDF: 10 pages
Proc. SPIE 2159, High-Temperature Superconducting Detectors: Bolometric and Nonbolometric, (20 May 1994); doi: 10.1117/12.176139
Show Author Affiliations
Santanu Bhattacharya, Univ. of Maryland/College Park (United States)
M. Rajeswari, Univ. of Maryland/College Park (United States)
Xiaoxing Xi, Univ. of Maryland/College Park (United States)
Qi Li, Univ. of Maryland/College Park (United States)
T. Venkatesan, Univ. of Maryland/College Park (United States)


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

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