The Superconductor-Insulator Transition in a Tunable Dissipative Environment

Details The Superconductor-Insulator Transition in a Tunable Dissipative Environment The Superconductor-Insulator Transition in a Tunable Dissipative Environment

1997-04-30

arxiv.org/abs/cond-mat/9704252v1

Physics

Condensed Matter

Superconductivity

4 pages, 4 .eps figures, revtex

Scientific paper

10.1103/PhysRevLett.79.2730

We study the influence of a tunable dissipative environment on the dynamics of Josephson junction arrays near the superconductor-insulator transition. The experimental realization of the environment is a two dimensional electron gas coupled capacitively to the array. This setup allows for the well-controlled tuning of the dissipation by changing the resistance of the two dimensional electron gas. The capacitive coupling cuts off the dissipation at low frequencies. We determine the phase diagram and calculate the temperature and dissipation dependence of the array conductivity. We find good agreement with recent experimental results.

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