The electronic properties of graphene and their exploration by scanning tunneling microscopy
Cristina Bena
LPS (Orsay) et IPhT
Mardi 09/03/2010, 11:00
Salle Claude Itzykson, Bât. 774, Orme des Merisiers

Graphene has been studied extensively in the recent years, especially after it became possible to fabricate it through exfoliation. Its most interesting aspect is the existence of linearly-dispersing gapless excitations in the vicinity of the Dirac points. I will review the history of graphene ``discovery'' as well as recent theoretical and experimental developments in the study of graphene, the open questions and its possible applications in the future. I will then focus on the details of graphene exploration using scanning tunneling microscopy. Graphene has the great advantage that, unlike in most of the other known two-dimensional electron gases, the electrons are confined to the surface, which makes it an ideal candidate for such measurements. I will describe what has been extracted so far from the measurements of the local density of states, and what we can hope to expect in the future from this analysis.

Contact : Stephane LAVIGNAC


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