title: Kondo effect from a tunable bound state within a quantum wire.
abstract: We investigate the conductance of quantum wires with a variable open quantum dot geometry, displaying an exceptionally strong Kondo effect and most of the 0.7 structure characteristics. Our results indicate that the 0.7 structure is not a manifestation of the singlet Kondo effect. However, specific similarities between our devices and many of the clean quantum wires reported in the literature suggest a weakly bound state is often present in real quantum wires.
authors.affiliation: Cavendish Laboratory, J. J. Thomson Avenue, Cambridge, CB3 OHE, United Kingdom. fs228@cam.ac.uk
authors.forename: F
authors.initials: F
authors.lastname: Sfigakis
authors.forename: C J B
authors.initials: CJ
authors.lastname: Ford
authors.forename: M
authors.initials: M
authors.lastname: Pepper
authors.forename: M
authors.initials: M
authors.lastname: Kataoka
authors.forename: D A
authors.initials: DA
authors.lastname: Ritchie
authors.forename: M Y
authors.initials: MY
authors.lastname: Simmons