标题： 可调应变下微波表面弹阻性测量技术的发展 显示英文标题

标题： Development of microwave surface elastoresistivity measurement technique under tunable strain

摘要： 通过将介电微波谐振器与基于压电效应的应变装置集成在一起，我们开发了一种原位可调应变微波光谱技术，该技术能够在无接触的情况下测量超导材料在应变条件下的性质。 在轻度过掺杂的铁基超导体 BaFe$_2$(As$_{1-x}$P$_x$)$_2$中，我们成功观察到超导转变的系统性应变依赖性，表现为品质因子的变化和共振频率的偏移。 沿[110]${_{\rm T}}$方向的压缩和拉伸各向异性晶格畸变都会抑制超导性，这一结果与标准输运测量一致，突显了向列涨落对超导机制的关键作用。 因此，我们的可调应变腔体成为一种强大的、无接触的探针，可用于研究应变条件下超导材料的基本性质，同时可能有助于设计具有可控量子自由度的混合量子系统。 显示英文摘要

摘要： By integrating a dielectric microwave resonator with a piezoelectric-based strain device, we develop an in situ strain-tunable microwave spectroscopy technique that enables contactless measurements of superconducting properties under strain. In the slightly overdoped iron-based superconductor BaFe$_2$(As$_{1-x}$P$_x$)$_2$, we successfully observe a systematic strain dependence of the superconducting transition, manifested as changes in the quality factor and resonance frequency shifts. Both compressive and tensile anisotropic lattice distortions along the [110]${_{\rm T}}$ direction suppress superconductivity, consistent with standard transport measurements, highlighting the pivotal role of nematic fluctuations in the superconducting mechanism. Our strain-tunable cavity therefore serves as a powerful, contactless probe of fundamental superconducting material properties under strain and may also potentially facilitate the design of hybrid quantum systems with strain-controlled quantum degrees of freedom.