Coupled quantum dots in a graphene-based two-dimensional semimetal.
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.
Moriyama
Satoshi
S
International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan. MORIYAMA.Satoshi@nims.go.jp
Tsuya
Daiju
D
Watanabe
Eiichiro
E
Uji
Shinya
S
Shimizu
Maki
M
Mori
Takahiro
T
Yamaguchi
Tomohiro
T
Ishibashi
Koji
K