Dresden 2026 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 92: Transport – Poster

TT 92.17: Poster

Donnerstag, 12. März 2026, 18:00–20:00, P4

Chiral Kondo Lattice Emergence in Moiré Heterostructure — •Benjamin Heinrich and Maria Daghofer — Institute for Functional Matter and Quantum Technologies (FMQ), University of Stuttgart

Moiré systems composed of van der Waals heterostructures provide an experimentally accessible platform to realize a wide range of strongly correlated electron phenomena. Using transition metal dichalcogenide materials, such as an AB-stacked MoTe₂/WSe₂ bilayer, gives rise to an effective multi-orbital Hubbard model on the honeycomb lattice, which can be tuned via doping and the introduction of charge transfer energy through external voltages. Including strong Ising spin-orbit coupling leads to chiral Kondo exchange between localized and itinerant electrons in different layers near half-filling [1], To gain a better understanding of experimentally observed phenomena, including magnetic ordering, numerical modeling is performed using exact diagonalization, and finite-size effects are further reduced using the variational cluster approach.
[1] Guerci et al., Sci. Adv. 9, eade7701 (2023)

Keywords: Moiré Heterostructure; Kondo Effect; Variational Cluster Approach; Transition Metal Dichalcogenide; Spin-Orbit Coupling