title: Sharp superconductor-insulator transition in short wires.
abstract: Recent experiments on short MoGe nanowires show a sharp superconducting-insulating transition at the universal resistance R(Q)=h/(4e(2)), contrary to the expectation of a smooth temperature dependence of the resistance for such Josephson-like systems. We present a self-consistent renormalization-group treatment of interacting quantum phase slips in short superconducting wires, which reproduces this sharp universal transition. Our method should also apply to other systems in the sine-Gordon universality class, in the previously inaccessible intermediate-coupling regime.
authors.affiliation: Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot, 76100, Israel.
authors.forename: Dganit
authors.initials: D
authors.lastname: Meidan
authors.forename: Yuval
authors.initials: Y
authors.lastname: Oreg
authors.forename: Gil
authors.initials: G
authors.lastname: Refael