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.
@article{arxiv.2009.03125,
title = {Heat-capacity measurements under uniaxial pressure using a piezo-driven device},
author = {Y. -S. Li and R. Borth and C. W. Hicks and A. P. Mackenzie and M. Nicklas},
journal= {arXiv preprint arXiv:2009.03125},
year = {2020}
}
Comments
This manuscript is an extended version of the experimental methods part of arXiv:1906.07597, which is being split into two separate papers