title: Coulomb blockade in an open quantum dot.
abstract: We report the observation of Coulomb blockade in a quantum dot contacted by two quantum point contacts each with a single fully transmitting mode, a system thought to be well described without invoking Coulomb interactions. Below 50 mK we observe a periodic oscillation in the conductance of the dot with gate voltage, corresponding to a residual quantization of charge. From the temperature and magnetic field dependence, we infer the oscillations are mesoscopic Coulomb blockade, a type of Coulomb blockade caused by electron interference in an otherwise open system.
authors.affiliation: Department of Physics, Stanford University, California 94305, USA. samasha@stanford.edu
authors.forename: S
authors.initials: S
authors.lastname: Amasha
authors.forename: I G
authors.initials: IG
authors.lastname: Rau
authors.forename: M
authors.initials: M
authors.lastname: Grobis
authors.forename: R M
authors.initials: RM
authors.lastname: Potok
authors.forename: H
authors.initials: H
authors.lastname: Shtrikman
authors.forename: D
authors.initials: D
authors.lastname: Goldhaber-Gordon