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TT: Fachverband Tiefe Temperaturen
TT 57: Correlated Magnetism – Kagome Systems
TT 57.7: Vortrag
Mittwoch, 11. März 2026, 16:45–17:00, CHE/0091
Many-body interference in Kagome crystals — •Chunyu Guo1, Kaize Wang1, Ling Zhang1, Carsten Putzke1, Dong Chen2, Takashi Oka3, Roderich Moessner4, Mark Fischer5, Titus Neupert5, Claudia Felser2, and Philip Moll1 — 1Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany — 2Max Planck Institute for Chemical Physics of Solids, Dresden, Germany — 3The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan — 4Max Planck Institute for the Physics of Complex Systems, Dresden, Germany — 5Department of Physics, University of Zurich, Zurich, Switzerland
When electrons in metals act collectively, they create emergent phenomena that exceed the behavior of individual particles. We present experimental evidence of coherent charge transport in the normal state of the Kagome metal CsV3Sb5. This is evidenced by magnetoresistance oscillations in mesoscopic crystalline pillars under in-plane magnetic fields, with periodicity determined by magnetic flux quanta, h/e, between adjacent Kagome layers, resembling an interlayer Aharonov-Bohm interferometer. The oscillation amplitude also correlates directly with other unusual electronic responses in CsV3Sb5, suggesting an intrinsic coherence mechanism. These findings shed light on the debated nature of correlated order in Kagome metals, positioning CsV3Sb5 as a unique platform for long-range coherent charge transport outside of superconductivity, and opening new avenues for understanding coherence in correlated electron systems.
Keywords: Kagome metals; Quantum transport; electronic correlation; Charge order