Princeton University Donald R. Hamilton Colloquium Series

Abstract: Atomically thin crystals form a vast family of 2D quantum materials, with only a few well studied. Engineered structures like stacked 2D crystals and moiré superlattices offer exceptionally rich and highly tunable platforms for exploring novel quantum phenomena and advancing device applications. In this talk, I will present experiments in 2D systems that challenge established paradigms in quantum materials. I will first highlight our observation of a new correlated 2D electronic phase in a moiré superlattice that mimics behaviors of the Luttinger liquid expected previously only for interacting 1D conductors, expanding the Luttinger-liquid-like interacting physics to 2D. I will then introduce a new concept of “van der Waals nanoreactors”, based on which I will present our series of inventions that enable high-quality and designable integration of superconductivity within non-superconducting moiré materials. I will further discuss our ongoing efforts to create quantum devices interfacing superconductivity and fractionalized electronic states, envisioning an unprecedented experimental system and methodology for discovering and utilizing superconducting phenomena in fractional quantum matter.