Heat-capacity measurements under uniaxial pressure using a piezo-driven device

Y. -S. Li; R. Borth; C. W. Hicks; A. P. Mackenzie; M. Nicklas

doi:10.1063/5.0021919

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arXiv · 2009.03125

Heat-capacity measurements under uniaxial pressure using a piezo-driven device

Y. -S. Li·R. Borth·C. W. Hicks·A. P. Mackenzie·M. Nicklas

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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 Sr$_2$RuO$_4$. By replacing thermometer and adjusting the remaining setup accordingly the temperature regime of the experiment can be adapted to other temperature ranges of interest.

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Y. -S. Li, R. Borth, C. W. Hicks, A. P. Mackenzie, M. Nicklas. 2020-09-07. Heat-capacity measurements under uniaxial pressure using a piezo-driven device. https://doi.org/10.1063/5.0021919

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