Superconductor-insulator transition and universal resistance in Josephson-junction arrays in a magnetic field.

  title={Superconductor-insulator transition and universal resistance in Josephson-junction arrays in a magnetic field.},
  author={Granato and Kosterlitz},
  journal={Physical review letters},
  volume={65 10},
The zero-temperature superconducting transition in a Josephson-junction array with half of a flux quantum per plaquette is considered. Its critical behavior is described by an effective free energy in three dimensions with a transition in a new universality class. From this we infer the critical behavior and the value of the universal resistance at the transition. Relevance of these results to recent experiments on very-small-capacitance arrays is discussed. 
30 Citations
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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.