Response of Josephson-junction arrays and granular superconductors near the superconductor-insulator transition

The Superconductor-to-Insulator Transition in Resistively-Shunted Josephson-Junction Arrays

This essay describes the, analytical theory, experimental observations and potential applications of superconductor‐to‐insulator quantum phase transitions in arrays of resistively‐shunted Josephson junctions and superconducting islands dissipatively‐coupled to an external source of single‐particle excitations.

Superconductor-insulator transition in frustrated Josephson-junction arrays on a honeycomb lattice

The zero-temperature superconductor to insulator transition is studied in a selfcharging model of Josephson-junction arrays on a honeycomb lattice in an external magnetic field corresponding to f flux quantum per plaquette. Path integral Monte Carlo simulations of the equivalent (2+1)-dimensional classical model are used to study the phase transition and critical behavior. For f = 1/3, the tran...

Spin Effects Near the Superconductor-Insulator Transition

Novel Effects in High-tc Granular Superconductors Predicted by a Model of 3d Josephson Junction Arrays

Despite the fact that Josephson Junction Arrays (JAA) have been actively studied for decades, they continue to contribute to the variety of intriguing and peculiar phenomena (both fundamental and important for potential applications) providing at the same time a useful tool for testing new theoretical ideas. To give just a few recent examples, it is sufficient to mention paramagnetic Meissner e...

Low-field magnetoresistance in granular Pb films near the insulator-superconductor transition.