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
View via Publisher
2 Citations

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.…
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.

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.
Quantum phase transitions and vortex dynamics in superconducting networks
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…
Positional disorder in superconducting wire networks and Josephson junction arrays.
TLDR
Using the linearized Ginzburg-Landau equations, the transition temperature, T/sub c/, is numerically determined as a function of the average number of magnetic-flux quanta per unit cell, f/sub 0/, for different amounts of disorder.
...
...