标题： 一种用于弹性电阻测量的低温单轴应变腔 显示英文标题

标题： A Cryogenic Uniaxial Strain Cell for Elastoresistance Measurements

摘要： 我们介绍了用于量子材料弹阻测量的低温兼容应变细胞的设计、实现和验证。 该细胞由三个大尺寸压电堆驱动，能够实现大约$\pm5\%$的压缩和拉伸应变。 样品支架的相对位移通过高分辨率电容位移传感器进行原位测量，确保在整个测量过程中精确控制应变。 为了在4.2 K至300 K的宽温度范围内操作应变细胞，开发了一种模块化测量探针，使其能够高效热耦合并集成到低温环境中。 通过在铁基超导体BaFe$_2$As$_2$沿[110]方向的弹阻测量，验证了该装置的功能和精度。 结果与基于粘接样品和应变计的传统技术进行了对比，显示弹阻系数的幅度和温度依赖性具有良好的一致性。 额外测试表明，在真空泵引入的机械振动下系统仍保持稳定，即使在液氮冷却下也能实现稳定的运行。 这突显了所开发平台在受控单轴应变下的低温输运测量中的高机械和热可靠性。 显示英文摘要

摘要： We present the design, implementation, and validation of a cryo-compatible strain cell for elastoresistance measurements in quantum materials. The cell is actuated by three large-format piezoelectric stacks and enables both compressive and tensile strain up to approximately $\pm5\%$. The relative displacement of the sample holders is measured in situ using a high-resolution capacitive displacement sensor, ensuring precise strain control throughout measurement. To operate the strain cell over a broad temperature range from 4.2\,K to 300\,K, a modular measurement probe was developed, allowing efficient thermal coupling and integration into cryogenic environments. The functionality and precision of the setup were demonstrated by elastoresistance measurements on the iron-based superconductor BaFe$_2$As$_2$ along the [110] direction. The results were validated against conventional techniques based on glued samples and strain gauges, showing excellent agreement in amplitude and temperature dependence of the elastoresistance coefficient. Additional tests revealed that the system remains robust under mechanical vibrations introduced by vacuum pumps, enabling stable operation even with liquid nitrogen cooling. This highlights the high mechanical and thermal reliability of the developed platform for low-temperature transport measurements under controlled uniaxial strain.