R. G. Herb Condensed Matter Seminars |
Events on Thursday, May 8th, 2025
- Mott insulators with boundary zeros
- Time: 10:00 am - 6:00 pm
- Place: 5310 Chamberlin
- Speaker: Giorgio Sangiovanni, Wuerzburg
- Abstract: In the recent literature, the concept of topological Mott insulator has been spelled out in rather different ways. Due to the intrinsic many-body nature, a comprehensive classification is challenging to formulate. In this talk I will discuss a novel, remarkably simple way of describing topological Mott insulators based on the momentum dispersion of single-particle Green's function zeros. After focusing on the fate of the bulk-boundary correspondence, I will propose a way of revealing the physical consequences of the boundary zeros based on the hybridization with conventional topologically protected edge modes. In the final part of the talk I will give an intepretation in terms of fractionalized electrons and boundary spinons of a U(1) gapped spin liquid phase. References N. Wagner, et al. Mott insulators with boundary zeros. Nat Commun 14, 7531 (2023). https://doi.org/10.1038/s41467-023-42773-7 N. Wagner, et al. Edge Zeros and Boundary Spinons in Topological Mott Insulators. Phys. Rev. Lett. 133, 126504 (2024). https://doi.org/10.1103/PhysRevLett.133.126504
- Host: Elio Konig