标题： 手性超导体 显示英文标题

标题： Chiral Superconductors

摘要： 手征超导性是一种引人注目的量子现象，在这种现象中，一种非常规超导体自发地产生角动量，并通过消除能隙中的节点来降低其自由能。这是一种拓扑非平凡的状态，因此在表面和缺陷处表现出独特的拓扑模式。在本文中，我们讨论了关于手征超导体的当前理论和实验结果，重点研究了两个研究最深入的系统，即Sr2RuO4，它被认为是一种手征三重态p波超导体，以及UPt3，它在零磁场下有两个低温超导相，其中较低的相被认为是一种手征三重态f波。还讨论了可能表现出手征超导性的其他系统。手征超导性的关键特征是表面电流和手征马约拉纳模式、涡旋核心中的马约拉纳态，以及在三重态配对情况下出现半通量量子涡旋的可能性。本文还讨论了来自μSR、NMR、应变、偏振Kerr效应和约瑟夫森隧穿实验的手征超导性的实验证据。 显示英文摘要

摘要： Chiral superconductivity is a striking quantum phenomenon in which an unconventional superconductor spontaneously develops an angular momentum and lowers its free energy by eliminating nodes in the gap. It is a topologically non-trivial state and, as such, exhibits distinctive topological modes at surfaces and defects. In this paper we discuss the current theory and experimental results on chiral superconductors, focusing on two of the best-studied systems, Sr2RuO4, which is thought to be a chiral triplet p-wave superconductor, and UPt3, which has two low-temperature superconducting phases (in zero magnetic field), the lower of which is believed to be chiral triplet f-wave. Other systems that may exhibit chiral superconductivity are also discussed. Key signatures of chiral superconductivity are surface currents and chiral Majorana modes, Majorana states in vortex cores, and the possibility of half-flux quantum vortices in the case of triplet pairing. Experimental evidence for chiral superconductivity from muSR, NMR, strain, polar Kerr effect and Josephson tunneling experiments are discussed.