Disorder-induced superconductor to insulator transition and finite phase stiffness in two-dimensional phase-glass models

Abstract

We study numerically the superconductor to insulator transition in two-dimensional phase-glass (or chiral-glass) models with varying degree of disorder. These models describe the effects of gauge disorder in superconductors due to random negative Josephson-junction couplings, or $\pi$ junctions. Two different models are considered, with binary and Gaussian distribution of quenched disorder, having nonzero mean. Monte Carlo simulations in the path-integral representation are used to determine the phase diagram and critical exponents. In addition to the usual superconducting and insulating phases, a chiral-glass phase occurs for sufficiently large disorder, with random local circulating currents of different chiralities. A transition from superconductor to insulator can take place via the intermediate chiral-glass phase. We find, however, that the chiral-glass state has a finite phase stiffness, being still a superconductor, instead of the Bose metal, which has been suggested by mean-field theory.

arXiv comment10 pages, 19 figures, Phys. Rev. B (2020). arXiv admin note: substantial text overlap with arXiv:1711.04669

References in corpus (29)

• Exchange Monte Carlo Method and Application to Spin Glass Simulations
• Continuous Quantum Phase Transitions
• Quantum Phase Transitions and Vortex Dynamics in Superconducting Networks
• Nature of the Quantum Metal in a Two-Dimensional Crystalline Superconductor
• Critical Behavior of the Three-Dimensional Ising Spin Glass
• The superconductor-insulator transition in 2D dirty boson systems
• The Elusive Bose Metal
• Zero--Temperature Quantum Phase Transition of a Two--Dimensional Ising Spin--Glass
• On the existence of a Bose Metal at T=0
• Single spin- and chiral-glass transition in vector spin glasses in three-dimensions
• A Phase Glass is a Bose Metal: New Conducting State in 2D
• Evidence of Collective Charge Behavior in the Insulating State of Ultrathin Films of Superconducting Metals
• Absence of a Zero Temperature Vortex Solid Phase in Strongly Disordered Superconducting Bi Films
• Universal conductivity in the boson Hubbard model in a magnetic field
• A common Universality class for the three-dimensional Vortex Glass and Chiral Glass?
• Current-voltage scaling of chiral and gauge-glass models of two-dimensional superconductors
• Numerical Study of Spin and Chiral Order in a Two-Dimensional XY Spin Glass
• Vortex Glass is a Metal: Unified Theory of the Magnetic Field and Disorder-Tuned Bose Metals
• Flux Pinning and Phase Transitions in Model High-Temperature Superconductors with Columnar Defects
• Quantum Monte Carlo study of a magnetic-field-driven 2D superconductor-insulator transition
• Critical behavior and driven Monte Carlo dynamics of the XY spin glass in the phase representation
• Resistive transition in $\pi$-junction superconductors
• Diluted Josephson-junction arrays in a magnetic field: phase coherence and vortex glass thresholds
• Absence of Phase Stiffness in the Quantum Rotor Phase Glass
• Superconductor-insulator transition of Josephson-junction arrays on a honeycomb lattice in a magnetic field
• Magnetic flux disorder and superconductor-insulator transition in nanohole thin films
• Quasiparticle Screening near a Bosonic Superconductor-Insulator Transition Revealed by Magnetic Impurity Doping
• Random gauge models of the superconductor-insulator transition in two-dimensional disordered superconductors
• Phase glass and zero-temperature phase transition in a randomly frustrated two-dimensional quantum rotor model

Cited by in corpus (1)

• Zero temperature superconductor - edge metal - insulator transition in $2D$ bosonic systems