Dresden 2026 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 39: Poster Magnetism II

MA 39.4: Poster

Mittwoch, 11. März 2026, 18:00–21:00, P2

Chirality controlled quantum transport in kagome AV3Sb5 — •Li Cheng and Qun Yang — Max Planck Institute of Microstructure Physics

Kagome metals AV3Sb5 exhibit a rich interplay among charge-density waves (CDWs), structural chirality, unconventional superconductivity, and anomalous Hall transport. Recent theoretical progress shows that layer-dependent phase shifts between CDW wave vectors can generate helical stacking and chiral electronic structures, while experiments reveal strong correlations between chirality and anomalous charge transport. In parallel, distorted kagome compounds display intertwined CDW and magnetic orders with enhanced tunability under external stimuli.

Motivated by these developments, this project aims to establish a predictive first-principles framework that connects CDW chirality with spin/orbital polarization as well as anomalous transport, and to uncover the microscopic mechanisms driving anomalous Hall responses in kagome systems. We further propose to explore pressure, strain, and temperature as external knobs for switching chirality and controlling emergent electronic and magnetic functionalities.

Keywords: Chiral charge-density waves; Kagome metals; Quantum transport; Spin and orbital polarization; Anomalous Hall effect