title: Coulomb interaction and first-order superconductor-insulator transition.
abstract: The superconductor-insulator transition (SIT) in regular arrays of Josephson junctions is studied at low temperatures. We derived an imaginary time Ginzburg-Landau-type action properly describing the Coulomb interaction. The renormalization group analysis at zero temperature T=0 in the space dimensionality d=3 shows that the SIT is always of the first order. At finite T, a tricritical point separates the lines of the first- and second-order phase transitions. The same conclusion holds for d=2 if the mutual capacitance is larger than the distance between junctions.
authors.affiliation: Theoretische Physik III, Ruhr-Universität Bochum, Bochum, Germany.
authors.forename: S V
authors.initials: SV
authors.lastname: Syzranov
authors.forename: I L
authors.initials: IL
authors.lastname: Aleiner
authors.forename: B L
authors.initials: BL
authors.lastname: Altshuler
authors.forename: K B
authors.initials: KB
authors.lastname: Efetov