Condensed Matter & Biological Physics Seminar "Drawing Conclusions from Graphene" Friday April 27, 2007 Location: PHYS 242 1:30p -2:30p (refreshments at 1PM, PHYS 242) Antonio Castro Neto Boston University Graphene, a two dimensional carbon crystal with a honeycomb lattice, was discovered only two years ago. It has generated a lot of excitement in the condensed matter community because of its unusual properties: anomalous integer quantum Hall effect, universal d.c. conductivity, absence of weak localization, unusual behavior in high magnetic fields, among others. In this talk I am going to discuss the various non-Fermi liquid properties of single layer, bilayer, and multi-layer graphene. I will also discuss the discovery and theoretical description of the first semiconductor with tunable gap by electric field effect created from a biased bilayer graphene. These results indicate that graphene belongs to a new class of materials with unique properties that can be used as the basis for carbon-based electronics.