Speaker
Haibing Peng
(University of Houston, Physics Department)
Description
Carlos Diaz-Pinto, Debtanu De, Viktor G. Hadjiev, Haibing Peng,
Department of Physics and the Texas Center for Superconductivity, University of Houston, Houston, Texas 77204
We report the synthesis of AB-stacked multilayer graphene via ambient pressure chemical vapor deposition on Cu foils, and demonstrate a method to construct suspended multilayer graphene devices. In four-terminal geometry, such devices were characterized by hot carrier transport at temperatures down to 240 mK and in magnetic fields up to 14 T. The differential conductance (dI/dV) shows a characteristic dip at longitudinal voltage bias V=0 at low temperatures, indicating the presence of hot electron effect due to a weak electron-phonon coupling. Under magnetic fields, the magnitude of the dI/dV dip diminishes through the enhanced intra-Landau level cyclotron phonon scattering. Our results provide new perspectives in obtaining and understanding AB-stacked multilayer graphene, important for future graphene-based applications. (Ref: ACS Nano, Vol 6, p. 1142, 2012 )
Primary author
Haibing Peng
(University of Houston, Physics Department)
