Superconducting and insulating behavior in one-dimensional Josephson junction arrays

Experiments on one-dimensional small capacitance Josephson Junction arrays are described. The arrays have a junction capacitance that is much larger t han the stray capacitance of the electrodes, which we argue is important fo r observation of Coulomb blockade. The Josephson energy can be tuned in sit u and an evolution from Josephson-like to Coulomb blockade behavior is obse rved. This evolution can be described as a superconducting to insulating, q uantum phase transition. In the Coulomb blockade state, hysteretic current- voltage characteristics are described by a dynamic model which is dual to t he resistively shunted junction model of classical Josephson junctions.