Friday's Disorder seminar

[Cond.Matt. & Stat.Mech.Section]

Seminar  on  Disorder and strong electron correlations





Friday, 11 December      -  11:00 a.m.



Seminar Room,  Leonardo Building - first floor





Alberto MORPURGO    ( University of Geneva)



"Graphene electronics"



Abstract



Graphene is a new material consisting of a one-atom-thick layer of  
graphite.  It has been discovered only a few years ago and since its  
discovery it has shown to possess many unique and fascinating  
properties. These properties are a consequence of the fact that  
electrons in graphene effectively behave as massless relativistic  
electrons, whose dynamics is described by the two-dimensional Dirac  
equation.  In this talk I will first introduce the field, by  
explaining in some detail how the electronic properties of graphene  
originate, how they manifest themselves in the experiments, and how  
the experiments are actually done.  I will then move to discuss more  
specific topics that we have investigated during the past few years.  
These include phase coherent transport of electrons (Aharonov-Bohm  
effect, weak-localization, Josephson supercurrent), finite  
conductivity at the charge neutrality point, and gate-tunable band  
structure.  Taken together, these examples make clear that graphene  
(single-layers as well as materials consisting of a small number of  
layers) indeed is a unique material system, in which the discovery of  
new physical phenomena can be expected, and which could be of use in  
future electronic applications.