Dr. Vasili Perebeinos
November 21, 201313.00 – 14.30
Beijing – 1 Auditorium, Skolkovo School of Management
Seminar Abstract: Graphene has unique electronic and optical properties. There is strong interest in taking advantage of these properties in transistors, optoelectronic, and communication technologies. In this talk, I will review some of the intrinsic transport properties of graphene and how they are affected by environmental interactions. In applications, graphene is on insulating substrates, which introduce phonon scattering and thermal bottleneck due to the self-heating, metals form contacts, so for technology we need to understand how these affect transport. Similarly, bilayers/multilayers are misoriented, which are claimed to be “decoupled”. We find that the bilayer low energy breathing phonons provide a scattering mechanism to overcome the decoupling, which is crucial for technology. Then I will talk about the roles of phonons and electron-electron scattering on the performance of graphene photonic devices, such as optical modulators and THz radiation sources. Finally, I will discuss the implications for electronics based on other 2D materials.
Speaker Introduction:
Dr. Perebeinos received the Diploma degree with the highest honor in physics from Moscow State University, Moscow, Russia, in 1997 and PhD degree in physics with the Graduate Council Commendation to Distinguished Doctoral Students from State University of New York at Stony Brook, Stony Brook, NY, USA, in 2001. Following two year postdoctoral appointment at Brookhaven National Lab, Upton, NY, USA, he joined IBM Thomas J. Watson research center in Yorktown Heights, NY, USA, as a visiting scientist in 2003, and since 2005 he is a Research Staff Member. His current research focuses on nanophotonics and nanoelectronics using group IV materials such as graphene and carbon nanotubes. He is actively involved in carrier transport and optoelectronic research in low-dimensional systems.
Dr. Perebeinos received an IBM Research Outstanding Technical Accomplishment award, two IBM Research Technical Accomplishment awards, and an IBM invention achievement award.
