title: Dephasing effect on transport of a graphene p-n junction in a quantum Hall regime.
abstract: The influence of the dephasing effect on the conductance distribution of disordered graphene p-n junctions is studied. Without the dephasing, the conductance distribution has a very wide range and the conductance fluctuation is large. In this case, the conductance plateaus cannot be obtained in a single sample with the fixed disorder configuration. However, by introducing the dephasing, we find that the distribution becomes narrow dramatically and the fluctuation is suppressed strongly, so that the conductance plateaus are obtained clearly for one single sample, which is consistent with experimental measurements. Furthermore, we also investigate the scaling feature of the conductance distribution and find that it has good scaling behavior in the strong dephasing case.
authors.affiliation: Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors.forename: Jiang-chai
authors.initials: JC
authors.lastname: Chen
authors.forename: Hui
authors.initials: H
authors.lastname: Zhang
authors.forename: Shun-Qing
authors.initials: SQ
authors.lastname: Shen
authors.forename: Qing-feng
authors.initials: QF
authors.lastname: Sun
mesh_terms: D004553:Electric Conductivity; D006108:Graphite / Q000737:chemistry*; D011789:Quantum Theory
chemical_list: D006108:Graphite