Weak magnetic fields reverse permanent nanoscale loop electrical currents in quantum kagome metals, enhancing diode-like effect up to 100X
https://www.sciencedaily.com/releases/2025/10/251007081829.htm "enabled by quantum geometry/ spontaneous symmetry breaking... in quantum metals quantum effects normally only relevant at atomic scales become powerful enough to control macroscopic electrical properties... kagome metals cooled to -190°C inherently strongly amplify quantum effect where electrons form circulating currents creating wave-like patterns throughout material... electronic devices controlled by simple magnets: magnetic memory devices, ultra-sensitive sensors" Related: Room-temperature mott insulator discovered in kagome material Nb₃Cl₈ opens a new path for strongly correlated quantum physics https://www.eurekalert.org/news-releases/1109855