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A phonon floodgate in monolayer carbon
Date:7/21/2008

rmally don't conduct electrons (as the pi orbitals do), but which are brought into play when the graphene sheet vibrates. "When a phonon is created, the sigma orbital kind of rubs up against the pi orbital and acts like grease to help insert a tunneling electron into graphene," Crommie says.

"We started this research by simply asking, what do you see when you measure a graphene device with STM?" Crommie says. "In the process, we discovered a completely unexpected phonon floodgate. This gives us new insight into how electrons and phonons behave in graphene and creates new opportunities for future graphene-based nanodevice applications."


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Contact: Paul Preuss
paul_preuss@lbl.gov
510-486-6249
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

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