Invisible light tempers a quirky superconductor, revealing new physics
Researchers show that virtual photons in boron nitride can suppress superconductivity in the layered organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br, even without real photons present, offering a novel way to probe and potentially tune superconducting behavior and deepen our understanding of quantum-field effects in materials.