Berlin 2024 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 74: Topological Insulators
TT 74.2: Vortrag
Donnerstag, 21. März 2024, 15:15–15:30, H 3005
Topological Green’s function zeros — Steffen Bollmann1, Chandan Setty2, Urban Seifert3, and •Elio König1 — 1Max-Planck Institute for Solid State Research, 70569 Stuttgart, Germany — 2Department of Physics and Astronomy, Rice Center for Quantum Materials, Rice University, Houston, Texas 77005, USA — 3Kavli Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106, USA
The interplay of topology and strong correlations manifests itself in a plethora of exotic phenomena. Specifically, topological bands of Green’s function zeros have recently attracted substantial interest. Here, we present an analytically tractable model displaying such topological bands of zeros in the fermionic Green’s function when the system is tuned to a topologically ordered phase. We further demonstrate the existence of "edge states" of zeros and discuss their experimental implications, in particular when proximitized to edge states of non-interacting topological insulators. If time permits, we will also discuss transport signatures.
Keywords: Topology; Fractionalization; Lattice Gauge Theory