title: High critical-current superconductor-InAs nanowire-superconductor junctions.
abstract: We report on the fabrication of InAs nanowires coupled to superconducting leads with high critical current and widely tunable conductance. We implemented a double lift-off nanofabrication method to get very short nanowire devices with Ohmic contacts. We observe very high critical currents of up to 800 nA in a wire with a diameter of 80 nm. The current-voltage characteristics of longer and suspended nanowires display either Coulomb blockade or supercurrent depending on a local gate voltage, combining different regimes of transport in a single device.
authors.affiliation: Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-412 96 Göteborg, Sweden.
authors.forename: Simon
authors.initials: S
authors.lastname: Abay
authors.forename: Henrik
authors.initials: H
authors.lastname: Nilsson
authors.forename: Fan
authors.initials: F
authors.lastname: Wu
authors.forename: H Q
authors.initials: HQ
authors.lastname: Xu
authors.forename: C M
authors.initials: CM
authors.lastname: Wilson
authors.forename: Per
authors.initials: P
authors.lastname: Delsing