title: A triple quantum dot in a single-wall carbon nanotube.
abstract: A top-gated single-wall carbon nanotube is used to define three coupled quantum dots in series between two electrodes. The additional electron number on each quantum dot is controlled by top-gate voltages allowing for current measurements of single, double, and triple quantum dot stability diagrams. Simulations using a capacitor model including tunnel coupling between neighboring dots captures the observed behavior with good agreement. Furthermore, anticrossings between indirectly coupled levels and higher order cotunneling are discussed.
authors.affiliation: NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi-shi, Kanagawa 243-0198, Japan. grove@will.brl.ntt.co.jp
authors.forename: K
authors.initials: K
authors.lastname: Grove-Rasmussen
authors.forename: H I
authors.initials: HI
authors.lastname: Jørgensen
authors.forename: T
authors.initials: T
authors.lastname: Hayashi
authors.forename: P E
authors.initials: PE
authors.lastname: Lindelof
authors.forename: T
authors.initials: T
authors.lastname: Fujisawa