Optical response of superconducting YBa2Cu3O7 thin films and grain-boundaries

S. Bhattacharya; M. Rajeswari; X. X. Xi; Qi Li; T. Venkatesan

doi:10.1117/12.176139

Optical response of superconducting YBa₂Cu₃O₇ thin films and grain-boundaries

S. Bhattacharya, M. Rajeswari, X. X. Xi, Qi Li, T. Venkatesan

Research output: Contribution to journal › Conference article › peer-review

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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 observe 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 15K < T < 80K. 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.

Original language	English (US)
Pages (from-to)	128-137
Number of pages	10
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	2159
DOIs	https://doi.org/10.1117/12.176139
State	Published - May 20 1994
Event	High-Temperature Superconducting Detectors: Bolometric and Nonbolometric 1994 - Los Angeles, United States Duration: Jan 23 1994 → Jan 29 1994

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.176139

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title = "Optical response of superconducting YBa2Cu3O7 thin films and grain-boundaries",

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 observe 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 15K < T < 80K. 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.",

author = "S. Bhattacharya and M. Rajeswari and Xi, {X. X.} and Qi Li and T. Venkatesan",

note = "Funding Information: This work was supported by NASA Goddard Space Flight Centers Grant No. NAG5-l979. Publisher Copyright: {\textcopyright} 1994 SPIE. All rights reserved.; High-Temperature Superconducting Detectors: Bolometric and Nonbolometric 1994 ; Conference date: 23-01-1994 Through 29-01-1994",

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T1 - Optical response of superconducting YBa2Cu3O7 thin films and grain-boundaries

AU - Bhattacharya, S.

AU - Rajeswari, M.

AU - Xi, X. X.

AU - Li, Qi

AU - Venkatesan, T.

PY - 1994/5/20

Y1 - 1994/5/20

N2 - 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 observe 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 15K < T < 80K. 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.

AB - 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 observe 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 15K < T < 80K. 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.

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JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - High-Temperature Superconducting Detectors: Bolometric and Nonbolometric 1994

Y2 - 23 January 1994 through 29 January 1994

ER -

Optical response of superconducting YBa₂Cu₃O₇ thin films and grain-boundaries

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