AI 中文总结
本研究通过原位μSR测量发现，单轴压力可调控三维量子自旋液体候选体系PbCuTe₂O₆的磁响应，实现对其阻挫交换环境的对称性选择性调控，为强关联体系的调控提供了新途径。
AI 中文摘要
我们报道了对候选三维（3D）量子自旋液体（QSL）PbCuTe₂O₆的缪子自旋弛豫/旋转（μSR）测量，该材料具有S=1/2的磁矩，在可控的原位[110]单轴压缩下，σ_[110]高达37.7 MPa。微小的定向晶格扰动显著改变了局域磁响应，当σ_cr约为10.8 MPa时，弛豫速率显著增强，内场分布大幅展宽。这些变化与局域晶体对称性破缺同时发生。尽管未观察到传统静态长程磁有序的证据，但压缩使系统向结构改性的强关联态转变，其中增强的准静态关联与持续的慢自旋动力学共存。本研究展示了一种清洁且对称性选择性的途径，用于调控三维QSL候选体系中的阻挫交换环境，并探索隐藏的磁不稳定性，为调控其他与磁和晶格自由度本征耦合相关的强关联体系开辟了可能。
英文摘要
We report muon spin relaxation/rotation ($μ$SR) measurements of the candidate three-dimensional (3D) quantum spin liquid (QSL) PbCuTe$_2$O$_6$, hosting $S=1/2$ moments, under controlled in situ [110] uniaxial compression up to $σ_{[110]}=37.7$~MPa. A small directional lattice perturbation significantly modifies the local magnetic response, while above $σ_{\rm cr}\sim10.8$\,MPa the relaxation rates are strongly enhanced and the internal-field distribution is substantially broadened. These changes occur along with the local crystalline symmetry breaking. While, no evidence for conventional static long-range magnetic order is observed, the compression drives the system towards a structurally modified and strongly correlated state in which enhanced quasi-static correlations coexist with persistent slow spin dynamics. This work demonstrates a clean and symmetry-selective route to control frustrated exchange landscape and access hidden magnetic instabilities in a 3D QSL candidate opening up the possibilities to tune other correlated systems where intrinsic coupling between magnetic and lattice degrees of freedom are relevant.
Comments7 pages, 4 figures. The supplementary information has not been uploaded in the current version
