MSE Seminar - Professor Phillip First, Georgia Tech
Monday, April 20, 2015 - 4:00pm
MARC (Callaway Bldg.) Auditorium
Title: Graphene: Not so Plane and Simple
The physics of planar graphene, an atom-thick honeycomb arrangement of carbon atoms, is somewhat different than conventional semiconducting or metallic materials. Many interesting properties are related to its unusual “Dirac cone” electronic structure, where electrons (and holes) travel with a velocity independent of their energy, similar to massless photons. Relative to other materials, the mobility of electrons and holes in graphene is extraordinary, placing it among potential partners to silicon for electronic devices. In this talk, I will discuss our atomic-scale measurements of graphene's electronic structure, and show that the simple Dirac cone is dramatically altered when the graphene plane is stressed through bending and shear.
Professor First has been a faculty member in the School of Physics at Georgia Tech since 1990. He earned a B.S. degree in physics from the University of Wisconsin and a Ph.D. from the University of Illinois in 1988. First’s research has been in the physics of surfaces, interfaces, and nanostructures. Since 2001, his contributions have been instrumental to the development and understanding of epitaxial graphene on silicon carbide. Professor First's Ph.D. students have earned several university-wide awards and one national honor. He has served his profession in several capacities, including as founding Chair of the Magnetic Interfaces and Nanostructures Division of the AVS.
Reception at 3:30 in MARC Auditorium