论文标题
节点线复合la $ _3 $ pt $ _3 $ bi $ _4 $
Superconductivity in the nodal-line compound La$_3$Pt$_3$Bi$_4$
论文作者
论文摘要
由于节点线半学的特定拓扑状态，新型拓扑超导性预计将在这些系统中出现。在这封信中，通过第一原则计算和电阻率，敏感性和特定的热量测量的结合，我们证明了la $ _3 $ pt $ _3 $ _3 $ _3 $ _4 $是在拓扑尺寸coupling coupling coupling coupling coupling coupling coupling coupling coupling coupling coupling coupling coupling coupling coupling coupling coupling coupling coupling coupling coupling coupling coupling symetry nodal-nodal-nodal-ring semimetal semimetal semimetal的保护。同时，我们发现了散装超导性，过渡温度为$ \ sim $ 1.1 K，以及$ \ sim $ 0.41 t的上部关键领域。这些发现表明，la $ _3 $ _3 $ _3 $ _3 $ _3 $ _4 $提供了研究Nodal-Ring System中新型超级导义的物质平台。
Owing to the specific topological states in nodal-line semimetals, novel topological superconductivity is expected to emerge in these systems. In this letter, by combination of the first-principles calculations and resistivity, susceptibility and specific heat measurements, we demonstrate that La$_3$Pt$_3$Bi$_4$ is a topologically nontrivial nodal-ring semimetal protected by the gliding-mirror symmetry even in the presence of spin-orbit coupling. Meanwhile, we discover bulk superconductivity with a transition temperature of $\sim$1.1 K, and an upper critical field of $\sim$0.41 T. These findings demonstrate that La$_3$Pt$_3$Bi$_4$ provides a material platform for studying novel superconductivity in the nodal-ring system.
