title: Boundary scattering in ballistic graphene.
abstract: We report magnetotransport measurements in ballistic graphene mesoscopic wires where the charge carrier mean free path is comparable to the wire width W. Magnetoresistance curves show characteristic peak structures where the peak field scales with the ratio of cyclotron radius R(c) and wire width W as W/R(c)=0.9±0.1, due to diffusive boundary scattering. The obtained proportionality constant between R(c) and W differs from that of a classical semiconductor two-dimensional electron system in which W/R(c)=0.55.
authors.affiliation: Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan. msatoru@iis.u-tokyo.ac.jp
authors.forename: Satoru
authors.initials: S
authors.lastname: Masubuchi
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Iguchi
authors.forename: Takehiro
authors.initials: T
authors.lastname: Yamaguchi
authors.forename: Masahiro
authors.initials: M
authors.lastname: Onuki
authors.forename: Miho
authors.initials: M
authors.lastname: Arai
authors.forename: Kenji
authors.initials: K
authors.lastname: Watanabe
authors.forename: Takashi
authors.initials: T
authors.lastname: Taniguchi
authors.forename: Tomoki
authors.initials: T
authors.lastname: Machida