Heat-capacity measurements under uniaxial pressure using a piezo-driven device
Journal
Review of Scientific Instruments
Journal Volume
91
Journal Issue
10
Start Page
103903
ISSN
0034-6748
1089-7623
Date Issued
2020-10-01
Author(s)
Abstract
We report the development of a technique to measure heat capacity at large uniaxial pressure using a piezoelectric-driven device generating compressive and tensile strain in the sample. Our setup is optimized for temperatures ranging from 8 K down to millikelvin. Using an AC heat-capacity technique, we are able to achieve an extremely high resolution and to probe a homogeneously strained part of the sample. We demonstrate the capabilities of our setup on the unconventional superconductor Sr2RuO4. By replacing thermometer and adjusting the remaining setup accordingly, the temperature regime of the experiment can be adapted to other temperature ranges of interest.
Publisher
AIP Publishing
Type
journal article