Quantum Transport in Graphene
Thursday, January 21, 2010 – 10:00am
Laboratoire de Physique des solides, Université de Paris-sud XI.
Graphene, the one atom thick crystal of carbon atoms, is a unique material due to its electronic band structure, in which the charge carriers behave as massless particles. We have studied the macroscopic and mesoscopic transport in this one atom thick layer, that follows a very different physics if a second layer is coupled to it. Electrons in a bilayer graphene behave as massive dirac fermions, which means a different dispersion relation and a different density of states compared to graphene. I will show experiments in both systems in two different regimes. Concerning macroscopic transport I will show an experiment that gives insight about the type of impurities in graphene, a subject that is still controversial in graphene. In the mesoscopic regime, I will talk about universal conductance fluctuations and also the proximity effect with a superconductor.
Host: Paola Barbara