论文标题
使用Muon-Spin旋转和松弛探测LAMSI（M = Ni，pt）中的无节结节超导性
Probing nodeless superconductivity in LaMSi (M = Ni, Pt) using muon-spin rotation and relaxation
论文作者
论文摘要
由于外来拓扑阶段和它们表现出的非常规现象，具有强旋转轨道耦合的系统一直是对凝结物理物理学的基本兴趣的话题。在这项特殊研究中，我们使用muon-spin旋转和弛豫测量值研究了具有不同的自旋轨道偶联强度的过渡金属非中心化合物LAMSI（M = Ni，Pt）中的超导性。涡旋状态中进行的横向场测量表明，两种材料中的超导性都完全覆盖，用于零温度间隙能的常规S波配对对称性和BCS样尺寸。零场测量结果表明，两个系统中的时间反向对称性保留了超导性，尽管在降低温度时会观察到若恩去极化的少量增加。但是，这归因于准静态磁波动。
Systems with strong spin-orbit coupling have been a topic of fundamental interest in condensed matter physics due to the exotic topological phases and the unconventional phenomenon they exhibit. In this particular study, we have investigated the superconductivity in the transition-metal ternary noncentrosymmetric compounds LaMSi (M = Ni, Pt) with different spin-orbit coupling strength, using muon-spin rotation and relaxation measurements. Transverse-field measurements made in the vortex state indicate that the superconductivity in both materials is fully gapped, with a conventional s-wave pairing symmetry and BCS-like magnitudes for the zero-temperature gap energies. Zero field measurements suggest a time-reversal symmetry preserved superconductivity in both the systems, though a small increase in muon depolarization is observed upon decreasing temperature. However, this has been attributed to quasi-static magnetic fluctuations.
