title: Quantum phase transition in one-dimensional arrays of resistively shunted small Josephson junctions.
abstract: We have observed a superconductor-insulator transition in one-dimensional (1D) arrays of small Josephson junctions by changing both the resistance R(S) of normal metal resistors shunting each junction and the ratio of the Josephson coupling energy E(J) to the charging energy E(C). The phase boundary lies at R(S) approximately R(Q) (R(Q) identical with h/4e(2)=6.45 kOmega) when E(J)/E(C) is smaller than about unity. We discuss the obtained phase diagram in terms of theoretical models of the dissipation-driven quantum phase transition, with particular attention to differences from 2D arrays.
authors.affiliation: Institute of Physics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan.
authors.forename: Hisao
authors.initials: H
authors.lastname: Miyazaki
authors.forename: Yamaguchi
authors.initials: Y
authors.lastname: Takahide
authors.forename: Akinobu
authors.initials: A
authors.lastname: Kanda
authors.forename: Youiti
authors.initials: Y
authors.lastname: Ootuka