Faint far-infrared radiation drives a correlated insulator-to-metal transition in magic-angle graphene

Researchers at the National University of Singapore showed that far-infrared radiation drives a correlated insulator-to-metal transition in magic-angle graphene. The study, published in Nature Communications, found that low radiation intensities heat electrons to melt the fragile insulating state. This process restores metallic conduction while the crystal lattice remains cold throughout.