title: Gate-defined graphene double quantum dot and excited state spectroscopy.
abstract: A double quantum dot is formed in a graphene nanoribbon device using three top gates. These gates independently change the number of electrons on each dot and tune the interdot coupling. Transport through excited states is observed in the weakly coupled double dot regime. We extract from the measurements all relevant capacitances of the double dot system, as well as the quantized level spacing.
authors.affiliation: Kavli Institute of Nanoscience, Delft University of Technology, Delft, The Netherlands. xinglan.liu@tudelft.nl
authors.forename: Xing Lan
authors.initials: XL
authors.lastname: Liu
authors.forename: Dorothee
authors.initials: D
authors.lastname: Hug
authors.forename: Lieven M K
authors.initials: LM
authors.lastname: Vandersypen
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D006108:Graphite / Q000737:chemistry*; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000295:instrumentation*; D010316:Particle Size; D045663:Quantum Dots; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*
chemical_list: D006108:Graphite