title: Coupled quantum dots in a graphene-based two-dimensional semimetal.
abstract: We present an experimental demonstration of a graphene-based double quantum dot system, which exhibits single-electron transport of two lateral quantum dots coupled in series. Low-temperature transport measurements revealed honeycomb charge stability diagrams with a varied (from weak to strong) interdot tunnel-coupling regime, and we have extracted the relevant parameters associated with the double quantum dot system. These results are important for the realization of integrated quantum circuits in graphene-based electronics.
authors.affiliation: International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan. MORIYAMA.Satoshi@nims.go.jp
authors.forename: Satoshi
authors.initials: S
authors.lastname: Moriyama
authors.forename: Daiju
authors.initials: D
authors.lastname: Tsuya
authors.forename: Eiichiro
authors.initials: E
authors.lastname: Watanabe
authors.forename: Shinya
authors.initials: S
authors.lastname: Uji
authors.forename: Maki
authors.initials: M
authors.lastname: Shimizu
authors.forename: Takahiro
authors.initials: T
authors.lastname: Mori
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Yamaguchi
authors.forename: Koji
authors.initials: K
authors.lastname: Ishibashi