Revisiting the Mott transition with new materials: from an old problem to new physics
- Date: Oct 22, 2021
- Time: 11:00 AM - 12:00 PM (Local Time Germany)
- Speaker: Kin Fai Mak
- Cornell University
- Location: SR I/II/III and online via Zoom
- Host: Angel Rubio / Andrea Cavalleri
The Mott transition, the localization of electrons by Coulomb forces, as simple as it may seem, is one of the most intriguing problems in strong correlation physics. Whether a continuous Mott transition from a non-magnetic Mott insulator to a Landau Fermi liquid is possible remains as an open question. Such a transition, if possible, has been theorized as a route to realize exotic quantum spin liquids. In this talk, I will first review the history and the basic concepts of the Mott transition. I will then discuss the realization of the continuous Mott transition in semiconductor moiré materials and the electronic and magnetic properties near the transition. I will end with a brief outlook on the future opportunities and challenges in studying the Mott transition with moiré materials.