2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/22187Spectral statistics in band structures is studied in a realistic model describing superconducting quantum interference devices (SQUID's). By controlling an external magnetic flux, the level statistics may show a crossover from the GUE to the GOE. Effects of secondary discrete symmetries seen in specific regions of the first Brillouin zone are also discussed.10 pages, 4 figuresMesoscale and Nanoscale PhysicsSuperconductivitytext