论文标题
使用单轴压力来探测与自旋条订单的杯形中竞争超导状态之间的关系
Using uniaxial stress to probe the relationship between competing superconducting states in a cuprate with spin-stripe order
论文作者
论文摘要
我们报告了对平面应力对静态自旋条纹顺序的影响和铜制系统LA2-XBAXCUO4中静态旋转条件和超导性的影响的MUON自旋旋转和磁化性实验，X = 0.115。极低的单轴应力为0.1 GPA可诱导磁体积分数大幅下降，而3D超导性发作的发作从10到32 K急剧下降；但是，AT-2D超导性的发作对应力敏感得多。这些结果不仅表明，大容量的自旋条纹顺序与3D超导（SC）相干性抗相关，而且这些状态在能量上非常平衡。此外，在较大的应力状态下，3D超导性和自旋条纹顺序的开始温度非常相似。这些结果强烈提出了针对自旋条纹顺序，空间调节的2D和均匀的3D SC顺序的类似的配对机制，对理论模型施加了重要的约束。
We report muon spin rotation and magnetic susceptibility experiments on in-plane stress effects on the static spin-stripe order and superconductivity in the cuprate system La2-xBaxCuO4 with x = 0.115. An extremely low uniaxial stress of 0.1 GPa induces a substantial decrease in the magnetic volume fraction and a dramatic rise in the onset of 3D superconductivity, from 10 to 32 K; however, the onset of at-least-2D superconductivity is much less sensitive to stress. These results show not only that large-volume-fraction spin-stripe order is anti-correlated with 3D superconducting (SC) coherence, but also that these states are energetically very finely balanced. Moreover, the onset temperatures of 3D superconductivity and spin-stripe order are very similar in the large stress regime. These results strongly suggest a similar pairing mechanism for spin-stripe order, the spatially-modulated 2D and uniform 3D SC orders, imposing an important constraint on theoretical models.
