Optical response of superconducting YBa2Cu3O7-delta thin films and grain boundaries

Santanu Bhattacharya; M. Rajeswari; Xiaoxing Xi; Qi Li; T. Venkatesan

doi:10.1117/12.176139

20 May 1994 Optical response of superconducting YBa₂Cu₃O_7-δ thin films and grain boundaries

Santanu Bhattacharya, M. Rajeswari, Xiaoxing Xi, Qi Li, T. Venkatesan

Proceedings Volume 2159, High-Temperature Superconducting Detectors: Bolometric and Nonbolometric; (1994) https://doi.org/10.1117/12.176139
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

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.

Citation Download Citation

Santanu Bhattacharya, M. Rajeswari, Xiaoxing Xi, Qi Li, and T. Venkatesan "Optical response of superconducting YBa₂Cu₃O_7-δ thin films and grain boundaries", Proc. SPIE 2159, High-Temperature Superconducting Detectors: Bolometric and Nonbolometric, (20 May 1994); https://doi.org/10.1117/12.176139

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