title: Transport properties of diazonium functionalized graphene: chiral two-dimensional hole gases.
abstract: The electric transport properties of diazonium functionalized graphene (DFG) were investigated. The temperature dependence of the resistivity (ρ-T) and the Shubnikov-de Haas oscillation of the DFG revealed two-dimensional hole gas (2DHG) behaviors. The DFGs exhibited unusual weak localization behaviors in which both inelastic and chirality-breaking elastic scattering processes should be taken into account, meaning that graphene chirality was maintained. Because of the giant decrease in the diffusion coefficient, the scattering rates remained relatively low in the presence of suppression of the scattering lengths. The decreases of both the mean free path and the Fermi velocity were responsible for the suppression of the diffusion coefficient and hence the charge mobility.
authors.affiliation: Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049, People's Republic of China.
authors.forename: Ping
authors.initials: P
authors.lastname: Huang
authors.forename: Long
authors.initials: L
authors.lastname: Jing
authors.forename: Hua Rui
authors.initials: HR
authors.lastname: Zhu
authors.forename: Xue Yun
authors.initials: XY
authors.lastname: Gao