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Events in Physics
Title: The Electrons In Your Pencil: Observations Of A Carbon Flatland    (Colloquia)
Start Date: 11/15/2010
Time: 4:30 pm
Location: 1 LeConte
Speaker: Mike Crommie
Affiliation: UC Berkeley
Contact Person: Sarah Wittmer   (510) 642-3034
Details:

Carbon is unique among elements due to the wide variety of structures that it can support. This property has long provided a playground for chemists and biologists, but it is only relatively recently that physicists have discovered what a flexible material carbon is for creating nanostructures with quantum mechanical behavior unlike any other substance. It is ironic that the most recent big breakthrough in the study of carbon-based materials has come from isolating the particulate matter of pencil scratchings, now called graphene.  The irony is that from such mundane origins comes such a surprisingly interesting material.  In this talk I will provide a termite's view of graphene, and describe some of the phenomena that you would see if you could shrink yourself down to the size of an atom and jump into a graphene flatland.  The tool that gives us this view is the scanning tunneling microscope (STM).  I will describe how the STM gives us new insight into the unusual ways that electrons move in pieces of graphene that have been structured at the nanometer scale.