Magnetic-field frustration and chiral-glass to insulator transition in superconducting arrays with random $$\pi $$ junctions

@article{Granato2021MagneticfieldFA,
  title={Magnetic-field frustration and chiral-glass to insulator transition in superconducting arrays with random \$\$\pi \$\$ junctions},
  author={Enzo Granato},
  journal={The European Physical Journal B},
  year={2021}
}
  • E. Granato
  • Published 1 July 2021
  • Physics
  • The European Physical Journal B
We study the effects of random $$\pi $$ Josephson junctions and applied magnetic field on the quantum phase transitions of superconducting arrays, described by a two-dimensional phase-glass model. The zero-temperature phase diagram and critical behavior are obtained from path-integral Monte Carlo simulations. A superconducting chiral-glass phase occurs for sufficiently large disorder resulting from frustration effects of the $$\pi $$ junctions. Unlike the superconductor–insulator transition… 
1 Citations
Superconducting and chiral-glass to insulator transition in phase-glass models in a magnetic field
  • E. Granato
  • Physics
    Journal of Physics: Conference Series
  • 2022
We investigate the quantum phase transitions of a phase-glass model in a magnetic field with frustration parameter f = 1/2, describing the effects random negative Josephson-junction couplings in

References

SHOWING 1-10 OF 45 REFERENCES
Disorder-induced superconductor to insulator transition and finite phase stiffness in two-dimensional phase-glass models
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
Random gauge models of the superconductor-insulator transition in two-dimensional disordered superconductors
We study numerically the superconductor-insulator transition in two-dimensional inhomogeneous superconductors with gauge disorder, described by four different quantum rotor models: a gauge glass, a
Magnetic flux disorder and superconductor-insulator transition in nanohole thin films
We study the superconductor-insulator transition in nanohole ultrathin films in a transverse magnetic field by numerical simulation of a Josephson-junction array model. Geometrical disorder due to
Driving a Superconductor to Insulator Transition with Random Gauge Fields
TLDR
It is shown that disorder in the form of random gauge fields that act directly on particle phases can also drive localization, and evidence of a superfluid bose glass to insulator transition at a critical level of this gauge field disorder in a nano-patterned array of amorphous Bi islands is presented.
Quasiparticle Screening near a Bosonic Superconductor-Insulator Transition Revealed by Magnetic Impurity Doping.
TLDR
Observations provide strong evidence that the bosonic SIT in thin films is a Mott transition driven by Coulomb interactions that are screened by virtual quasiparticle excitations, which distinguishes these SITs from those in microfabricated Josephson Junction arrays, cold atom systems, and likely in high temperature superconductors with nodes in their quasipping states.
Superconductor-insulator transition of Josephson-junction arrays on a honeycomb lattice in a magnetic field
Abstract We study the superconductor to insulator transition at zero temperature in a Josephson-junction array model on a honeycomb lattice with f flux quantum per plaquette. The path integral
Resistive transition in $π$-junction superconductors
The resistivity behavior of inhomogeneous superconductors with random $\ensuremath{\pi}$ junctions, as in high-${T}_{c}$ materials with d-wave symmetry, is studied by numerical simulation of a
Intermediate bosonic metallic state in the superconductor-insulator transition
TLDR
How quantum phase coherence evolves across superconductor–metal–insulator transitions through magnetoconductance quantum oscillations in nanopatterned high-temperature superconducting films is studied and it is suggested that the anomalous metallic state is bosonic and that the saturation ofphase coherence plays a prominent role in its formation.
...
...