| 报告题目： |
Non-Abelian Fractional Quantum Hall State of Multilayer Graphene |
| 报告人： |
吴英海 |
| 报告人单位： |
Max Plank Institute of Quantum Optics |
| 报告时间： |
5月18日下午3：30 |
| 报告地点： |
科技楼南501 |
| 报告摘要： |
|
| |
The discovery of quantum Hall effect in the early 1980s ushered in the era of topological phases in modern condensed matter physics. The possibility that certain fractional quantum Hall (FQH) states can support non-Abelian anyons, which are exotic particles that transform according to a non-Abelian representation of the braid group, has caused tremendous excitement in recent years. We make a strong theoretical case that a recently observed FQH state at filling factor 1/2 in bilayer graphene represents a new class of FQH state with fractionally charged non-Abelian excitations. We identify its physical origin, provide an explicit microscopic wave function for it, perform extensive numerical tests, and list experimental signatures that differentiate it from other candidate non-Abelian FQH states. We further predict a topological quantum phase transition between two distinct non-Abelian FQH states at filling factors -3/2 and 5/2 in bilayer graphene. Multilayer graphene can serve as a unique platform for the realization of other non-Abelian FQH states. |
| 报告人简介： |
|
| |
吴英海博士2009年本科毕业于中国科学技术大学近代物理系，之后在美国宾夕法尼亚州立大学于2014年获得博士学位。现在在Max Plank Institute of Quantum Optics做博士后研究。 |
