Exploring new phases of matter and understanding their physics are at the forefront of condensed matter physics. The discovery of moiré materials has revolutionized this pursuit, providing a simpler and more controllable approach to investigating complex phenomena. Beyond geometry and symmetry, electron band topology and electron-electron correlations are pivotal in understanding and harnessing the unique properties of quantum materials. In my talk, I will demonstrate how we use the power of 2D quantum materials to simulate topological and many-body Hamiltonians by two examples. First, I will explain our discovery of the Haldane Chern insulator by splitting a quantum spin Hall insulator into two halves: one topologically trivial and the other nontrivial. Second, I will describe the realization of a synthetic Kondo lattice in AB-stacked MoTe2/WSe2 moiré bilayers, where the MoTe2 layer is tuned to a Mott insulating state, supporting a triangular moiré lattice of local moments and the WSe2 layer is doped with itinerant conduction carriers. Finally, I will conclude by highlighting many exciting new possibilities in 2Dquantum materials. By combining complementary techniques, we not only open new avenues in the study of quantum materials but also lay the groundwork for future technological innovations.
Refreshments - 3:30 pm at 1117 Toll Physics Bldg.