| 报告题目 | Time-Reversal-Invariant Topological Superconductivity |
| 报告人 | Prof. ZHANG Fan |
| 报告人单位 | University of Texas at Dallas, USA |
| 报告时间 | 2015-07-07 |
| 报告地点 | 合肥微尺度物质科学国家实验室（9004室） |
| 主办单位 | 合肥微尺度物质科学国家实验室、国际功能材料量子设计中心(ICQD)、中国科学技术大学物理系 |
| 报告介绍 | 报告摘要：
The discovery of topological insulators has created a revolution in condensed matter physics and materials science that has far ranging implications over coming decades. I will first introduce a simple way to understand the essential ideas of topological insulators: band inversion and symmetry protection. I will then generalize the ideas to experimentally feasible superconducting systems with time-reversal symmetry. When such a one-dimensional system becomes topological nontrivial, a Majorana Kramers pair appears on the boundary, producing tabletop supersymmetry, high critical temperature, quantized tunneling conductance plateaus, and unprecedented fractional Josephson effects. The latter effects have two significant implications: (i) the existence of a "periodic building" beyond Kitaev table unifying all the free-fermion topological systems and (ii) the realization of fractionalization in interacting superconductors. |
