Optically detected transient thermal response of high T c epitaxial films

6 January 1992

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 60 (1), 126-128
https://doi.org/10.1063/1.107345

Abstract

A thermally induced transient absorption is found to accompany the unusually fast and sensitive bolometric response of thin YBa₂Cu₃O₇ films. We utilize this optical signature as an internal thermometer to investigate thermal transients in both superconducting films and their undoped isomorphs. In the temperature range 10–300 K we find that the combination of a small thermal film mass and a large film‐substrate interface resistance results in large transient temperatures. Superconducting and nonsuperconducting films show comparable temperature rises and kinetics.

Keywords

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