Beyond BCS: An Exact Model for Superconductivity and Mottness

Watch a physics colloquium lecture where Professor Philip Phillips from the University of Illinois Urbana-Champaign explores groundbreaking developments in superconductivity theory beyond the traditional Bardeen-Cooper-Schrieffer (BCS) model. Delve into the challenges posed by high-temperature superconductors discovered in cuprate ceramic materials in 1986, which defy conventional Landau Fermi liquid theory principles. Learn about a novel approach based on an overlooked symmetry in cuprate models, leading to a quadratic fixed point with unique properties. Discover how this new theoretical framework differs from BCS theory, featuring distinct elementary excitations and the absence of the Hebel-Slichter peak. Explore the implications for understanding strongly correlated electron matter and its superconducting properties through detailed analysis of recent research findings published in Nature Physics and Physical Review B.