[原分所演講] IAMS Lecture on April 18, 11:00am, Dr. Poe Lecture Hall, Prof. Yuanbo Zhang
消息來源：化學系辦公室
截止日期：2016-04-07
IAMS Lecture Announcement
中研院原分所演講公告
Speaker: Prof. Yuanbo Zhang (Department of Physics, Fudan University)
Venue: Dr. Poe Lecture Hall, IAMS 本所浦大邦講堂
Time: 11:00am, April 18, 2016
Title: Gate-tunable Valley Transport in Bilayer Graphene
Abstract
Graphene is a peculiar two-dimensional material where electrons behave as massless particles (Dirac fermions) with an effective speed of light equal to c/300. This provides an interesting analogy to the high energy relativistic quantum mechanics in a condensed matter system, and the peculiar band structure of graphene gives rise to the prospect of a topological current in a graphene lattice with broken inversion symmetry. In this talk, I will discuss our recent experiments on bilayer graphene where the inversion symmetry is controllably broken by gate electric field. The symmetry breaking leads to topological transport of valley current, which we study using non-local electrical measurements.
中研院原分所演講公告
Speaker: Prof. Yuanbo Zhang (Department of Physics, Fudan University)
Venue: Dr. Poe Lecture Hall, IAMS 本所浦大邦講堂
Time: 11:00am, April 18, 2016
Title: Gate-tunable Valley Transport in Bilayer Graphene
Abstract
Graphene is a peculiar two-dimensional material where electrons behave as massless particles (Dirac fermions) with an effective speed of light equal to c/300. This provides an interesting analogy to the high energy relativistic quantum mechanics in a condensed matter system, and the peculiar band structure of graphene gives rise to the prospect of a topological current in a graphene lattice with broken inversion symmetry. In this talk, I will discuss our recent experiments on bilayer graphene where the inversion symmetry is controllably broken by gate electric field. The symmetry breaking leads to topological transport of valley current, which we study using non-local electrical measurements.