Quantum Matter Seminar

Topology plays a key role in describing quantum matter, which has been greatly explored in recent decades. First, I present how tuning a topological insulator featuring a Dirac fermion can be used as a platform to realize emergent Weyl fermion and "fractional" Fermi surfaces; and can also lead to correlated magnetic, Chern, or many-body states. The kagome lattice, which features Dirac fermions, flat bands, and van Hove singularities, can serve as the platform to explore topology, strong correlation, exotic superconductivity, emergent chirality, and many-body density-wave phenomena as shown in a series of recent works including some new developments. These topological quantum matter harbor novel properties that provide versatile platforms for the development of next-generation quantum devices.