论文标题
在单轴压力下，分裂超导和时反转对称性过渡和磁性顺序和磁性顺序在单轴压力下
Split superconducting and time-reversal symmetry-breaking transitions, and magnetic order in Sr$_2$RuO$_4$ under uniaxial stress
论文作者
论文摘要
在非常规的超导体中，SR $ _2 $ ruo $ _4 $已成为实验和理论分析的基准，因为其正常状态电子结构以非凡的精度而闻名，并且由于实验性证据表明，其超导性具有异常，非常常见的是一种自发的角度动向，即A chrial a Chiral a Chiral a Chiral。但是，手性的假设很难与关于顺序参数的自旋部分的最新证据进行调和。单轴压力下的测量值是测试手性的理想方法，因为在单轴应力下，预测超导和手性转变可以分裂，从而可以单独识别每个人的经验特征。在这里，我们报告了Zerofield Muon自旋松弛（ZF- $ $ $ SR）的测量值，该晶体下的单轴应力下应为1.05 GPa。我们报告说，超导性的发作温度和时间反向对称性破裂之间的应力引起的分裂明显，与手性超导性的定性期望一致。我们还报告了在干净的SR $ _2 $ ruo $ _4 $中的单轴应力下的意外散装磁顺序的外观。
Among unconventional superconductors, Sr$_2$RuO$_4$ has become a benchmark for experimentation and theoretical analysis because its normal-state electronic structure is known with exceptional precision, and because of experimental evidence that its superconductivity has, very unusually, a spontaneous angular momentum, i.e. a chiral state. This hypothesis of chirality is however difficult to reconcile with recent evidence on the spin part of the order parameter. Measurements under uniaxial stress offer an ideal way to test for chirality, because under uniaxial stress the superconducting and chiral transitions are predicted to split, allowing the empirical signatures of each to be identified separately. Here, we report zerofield muon spin relaxation (ZF-$μ$SR) measurements on crystals placed under uniaxial stresses of up to 1.05 GPa. We report a clear stress-induced splitting between the onset temperatures of superconductivity and time-reversal symmetry breaking, consistent with qualitative expectations for chiral superconductivity. We also report the appearance of unexpected bulk magnetic order under a uniaxial stress of ~ 1.0 GPa in clean Sr$_2$RuO$_4$.
