Bond and flux-disorder effects on the superconductor-insulator transition of a honeycomb array of Josephson junctions

@article{Granato2017BondAF,
  title={Bond and flux-disorder effects on the superconductor-insulator transition of a honeycomb array of Josephson junctions},
  author={Enzo Granato},
  journal={Physica B-condensed Matter},
  year={2017},
  volume={536},
  pages={442-446}
}
  • E. Granato
  • Published 22 September 2017
  • Physics
  • Physica B-condensed Matter
2 Citations
Magnetic-field frustration and chiral-glass to insulator transition in superconducting arrays with random $$\pi $$ junctions
  • E. Granato
  • Physics
    The European Physical Journal B
  • 2021
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.
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References

SHOWING 1-10 OF 31 REFERENCES
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
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
Disorder influences the quantum critical transport at a superconductor-to-insulator transition
We isolated flux disorder effects on the transport at the critical point of the quantum magnetic field tuned Superconductor to Insulator transition (BSIT). The experiments employed films patterned
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.
Resistive transition in frustrated Josephson-junction arrays on a honeycomb lattice
We use driven Monte Carlo dynamics to study the resistive behavior of superconducting Josephson junction arrays on a honeycomb lattice in a magnetic field corresponding to $f$ flux quantum per
Flux pinning and phase transitions in model high-temperature superconductors with columnar defects.
TLDR
The degree of flux pinning by defects in model high-temperature superconductors (HTSC's) is calculated and results appear consistent with the anisotropic Bose-glass-scaling hypotheses of Nelson and Vinokur, but with possibly different critical indices.
Conductivity of strongly correlated bosons in optical lattices in an Abelian synthetic magnetic field
Topological phase engineering of neutral bosons loaded in an optical lattice opens a new window for manipulating of transport phenomena in such systems. Exploiting the Bose-Hubbard model and using
Quantum fluctuations in chains of Josephson junctions
We study the effect of quantum fluctuations of the phase on the low-temperature behavior of two models of Josephson junction chains with Coulomb interactions taken into account. The first model,
Quenched disorder in Josephson-junction arrays in a transverse magnetic field.
A simple model for weak quenched disorder in Josephson-junction arrays is considered and the effects of two kinds of disorder on the resistive behavior of the array is determined. For the case of
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