CPM Seminar

Engineering the property of graphene with adatoms

Jun Zhu

Department of Physics
Pennsylvania State University

Graphene is a fascinating 2D material from the viewpoint of both fundamental physics studies and electronics applications. In this talk, I will discuss our work on engineering new properties of graphene with adatoms. Graphene is gapless; we show that completely fluorinated graphene becomes a wide gap insulator with deep UV emission potential. Graphene is non-magnetic. Adatoms can potentially induce magnetism in graphene. Our experiments on dilute fluorinated graphene reveal intriguing magneto-transport properties of this material, including unusual phase coherence length saturation at low temperature and large negative magneto-resistance. I will discuss the possible origins of these observations.