Optical spectroscopy of graphene and bilayer graphene
Zhiqiang Li (Columbia University)
Graphene, a single atomic layer of graphite, is a unique material
characterized by Dirac quasiparticles with linear energy-momentum
dispersion. The coupling of two graphene sheets in bilayer graphene
leads to fundamental modifications of electronic properties. These
systems have exhibited a spectrum of new physics as well as potentials
for device applications. In this talk, I will discuss recent optical
spectroscopy study of monolayer and bilayer graphene performed at the
ALS. In addition to a direct confirmation of Dirac quasiparticles in
graphene, these studies have revealed several new insights in these
intriguing materials. I will discuss charge dynamics in graphene and
the band structure of bilayer graphene.
Back to Program