The interplay of correlations and molecular phonons in the superconductivity of(Formula presented) (Formula presented)fullerides

The study of alkali-doped fulleride superconductors ( (Formula presented) (Formula presented) ) challenges the conventional paradigm by exhibiting robust (Formula presented) (Formula presented) -wave superconductivity within a strongly correlated Mott background. This review provides a comprehensive overview of the underlying pairing mechanism, which is fundamentally driven by the synergistic interplay between molecular Jahn–Teller phonons and Mott–Hubbard correlations. We elucidate how dynamical phonon coupling overcomes Hund’s exchange to favor a low-spin ground state, while the proximity to the Mott transition selectively renormalizes the electronic kinetic energy, collectively giving rise to the optimal superconducting dome. Furthermore, we discuss the pressure-tuned evolution of these interactions and critically evaluate the recent breakthroughs and ongoing debates regarding photo-induced transient superconductivity. By unifying equilibrium correlation physics with non-equilibrium dynamics, this review highlights fullerides as a quintessential platform for exploring cooperative quantum phenomena.