标题： 手性 p 波超导性在接近范霍夫奇点的 Sb(111) 薄膜中 显示英文标题

标题： Chiral p-wave superconductivity in Sb(111) thin films close to Van Hove singularities

摘要： 我们理论研究了当Sb(111)薄膜的费米能级调制到接近类型-II范霍夫奇点(VHS)时，非常规超导性的发展，这些奇点位于非时间反演不变动量处。 通过补丁重整化群分析，我们表明主要的不稳定性是一种手性p+ip波超导序。 这种配对的起源依赖于VHS的六边形结构和强自旋轨道耦合，导致电子-电子散射的各向异性，从而提供了一个吸引通道。 因此，我们的研究建议，源于VHS物理的超导Sb薄膜可能在磁通涡旋中容纳马约拉纳零模，并为这种材料提供了另一个应用视角。 显示英文摘要

摘要： We theoretically investigate the development of unconventional superconductivity in the Sb(111) thin film when its Fermi level is tuned to near type-II Van Hove singularities (VHS), which locate at non-time-reversal invariant momenta. Via patch renormalization group analysis, we show that the leading instability is a chiral p + ip-wave superconducting order. The origin of such pairing relies on the hexagonal structure of the VHS and strong spin-orbit coupling, resulting in the anisotropy of the electron-electron scattering to provide an attractive channel. Our study hence suggests that superconducting Sb thin films originated from VHS physics may host Majorana zero modes in the magnetic vortices and provides another application perspective to such material.