Dresden 2026 – scientific programme
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O: Fachverband Oberflächenphysik
O 42: Electronic structure of surfaces: Spectroscopy, surface states – Poster
O 42.7: Poster
Tuesday, March 10, 2026, 14:00–16:00, P2
Realization of an Acoustic Kagome lattice — •Louis Müller1,3, Noah Endres1,3, Begmuhammet Geldiev1,3, Simon Widmann2,3, Maximilian Ünzelmann1,3, and Friedrich Reinert1,3 — 1Exp. Physik VII, JMU Würzburg, Germany — 2Technische Physik, JMU Würzburg, Germany — 3Würzburg-Dresden Cluster of Excellence ctd.qmat
Hosting Dirac cones, flat bands, and saddle points in their band structure, Kagome materials have recently attracted great attention. We realize an acoustic Kagome lattice using 3D-printed resonators, enabling direct measurement of amplitude and phase to reconstruct wave functions and extract the band structure. Our experiment resolves the flat band, identifies the sublattice character of the van-Hove singularities, and clearly reproduces the Dirac cones in good agreement with tight-binding calculations. This platform provides a highly flexible and intuitive way to investigate lattice-driven effects that are difficult to isolate in electronic Kagome systems. Finally, we compare this data to angle-resolved photoemission spectroscopy measurements on a prototypical Kagome superconductor.
Keywords: Acoustic Kagome; Kagome; ARPES; topology; flat band