Dissipation-driven phase transition in 2D Josephson arrays

Abstract

We analyze the interplay of dissipative and quantum effects in the proximity of a quantum phase transition. The prototypical system is a resistively shunted two-dimensional Josephson junction array, studied by means of an advanced Fourier path-integral Monte Carlo algorithm. The reentrant superconducting-to-normal phase transition driven by quantum fluctuations, recently discovered in the limit of infinite shunt resistance, persists for moderate dissipation strength but disappears in the limit of small resistance. For large quantum coupling our numerical results show that, beyond a critical dissipation strength, the superconducting phase is always stabilized at sufficiently low temperature. Our phase diagram explains recent experimental findings.

4 pages, 5 figures

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• Dynamical and Steady State Properties of a Bose-Hubbard Chain with Bond-Dissipation: A Study based on Matrix Product Operators
• Dissipation-driven quantum phase transitions in collective spin systems
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• Quantum Monte Carlo study of a magnetic-field-driven 2D superconductor-insulator transition
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• Three distinct types of quantum phase transitions in a (2+1)-dimensional array of dissipative Josephson junctions
• Reaction-diffusion dynamics in a Fibonacci chain: Interplay between classical and quantum behavior
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• Inverse Superconductor-Insulator Transition in Weakly Monitored Josephson Junction Arrays
• Coherent pair injection as a route towards the enhancement of supersolid order in many-body bosonic models