Microscopic theory of in-plane critical field in two-dimensional Ising superconducting systems

报告题目：Microscopic theory of in-plane critical field in two-dimensional Ising superconducting systems

报告人：刘海文北京师范大学

报告时间：2019年8月1 日　下午：3:50-4:50

报告邀请人：江华

报告地点：物理科技楼 101室

报告摘要： We study the in-plane critical field of two-dimensional Ising superconducting systems, and propose the microscopic theory for these systems with or without inversion symmetry. Within both systems, the in-plane critical fields show remarkable up-turn feature near the zero temperature limit and largely surpass the Pauli limit, which are protected by certain specific spin-orbital interaction polarizing the electron spin to the out-of-plane direction. The impurity scattering and Rashba spin orbital scattering both weaken the critical field but in qualitatively different manners, which have been treated on equal-footing in the microscopic framework. The microscopic theory is consistent with recent experimental results in Stanene and Pb superconducting ultra-thin films.

报告人简介：北京师范大学物理学系工作，从事低维体系输运特性理论研究，针对杂质诱导的量子相变和拓扑材料的输运特性等物理问题。近期研究兴趣为杂质诱导的量子相变、拓扑材料和二维超导的输运性质、退相干效应。