论文标题
使用压电驱动的设备在单轴压力下进行热容量测量
Heat-capacity measurements under uniaxial pressure using a piezo-driven device
论文作者
论文摘要
我们报告了使用压电驱动的设备在样品中产生压力和拉伸应变的技术，以在大型单轴压力下测量热容量的技术开发。我们的设置已针对从8 K到Millikelvin的温度进行了优化。使用交流热容量技术，我们能够达到极高的分辨率，并探测样品中均匀紧张的一部分。我们在非常规超导体SR $ _2 $ ruo $ _4 $上演示了我们设置的功能。通过更换温度计并相应地调整剩余的设置，可以将实验的温度状态适应其他感兴趣的温度范围。
We report the development of a technique to measure heat capacity at large uniaxial pressure using a piezoelectric-driven device generating compressive and tensile strain in the sample. Our setup is optimized for temperatures ranging from 8 K down to millikelvin. Using an AC heat-capacity technique we are able to achieve an extremely high resolution and to probe a homogeneously strained part of the sample. We demonstrate the capabilities of our setup on the unconventional superconductor Sr$_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.
