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

This publication has 6 references indexed in Scilit:

Ultrasonic wave propagation and barrier-limited heat flow in thin films of ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - x}$
Physical Review B, 1991
Fast bolometric response by high Tc detectors measured with subnanosecond synchrotron radiation
Applied Physics Letters, 1990
The electronic specific heat of YBa2 (Cu1−xZnx)3O7 from 1.6 K to 300 K
Physica C: Superconductivity and its Applications, 1990
Anisotropy of the thermal conductivity of ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - y}$
Physical Review B, 1989
As-deposited high T c and J c superconducting thin films made at low temperatures
Applied Physics Letters, 1988
Oxygen-deficiency-induced localized optical excitations in $Y {Ba}_{2} {Cu}_{3} O_{x}$
Physical Review B, 1988