Many-body interference in kagome crystals
When electrons in metals act collectively, they enable emergent phenomena and electronic functionalities that transcend the behaviour of individual particles<sup>1</sup>. Coherent collective charge motion has so far been observed primarily in superconductors, in which it arises with the formation of Cooper pairs<sup>2,3</sup>. Here we report experimental evidence for coherent charge transport in the normal state of the kagome metal CsV<sub>3</sub>Sb<sub>5</sub>, indicative of a distinct collective electronic state. The signature is a set of magnetoresistance oscillations in mesoscopic crystalline pillars under in-plane magnetic fields, with a periodicity determined by the number of magnetic flux quanta h/e threading between adjacent kagome layers-effectively forming an interlayer Aharonov-Bohm interferometer. The cooperative nature of this phenomenon is evidenced by a non-analytic angular dependence characterized by abrupt transitions between discrete oscillation frequencies and its persistence over length scales that exceed the single-particle mean free path. Notably, the oscillation amplitude matches other anomalous electronic responses reported in CsV<sub>3</sub>Sb<sub>5</sub>, pointing to an underlying mechanism that establishes intrinsic coherence. These findings shed new light on the debated nature of correlated order in kagome metals and establish CsV<sub>3</sub>Sb<sub>5</sub> as a platform for realizing long-range coherent charge transport in the absence of superconductivity-opening new directions for coherence in correlated electron systems beyond conventional models.
Authors
- Maia G. Vergniory (ORCID: https://orcid.org/0000-0001-7336-3062)
- R. McDonald (ORCID: https://orcid.org/0000-0002-5819-4739)
- Carsten Putzke (ORCID: https://orcid.org/0000-0002-6205-9863)
- Kaize Wang (ORCID: https://orcid.org/0009-0006-5257-4243)
- Martin Gutierrez‐Amigo (ORCID: https://orcid.org/0000-0002-5265-1441)
- M. R. van Delft (ORCID: https://orcid.org/0000-0002-6952-9418)
- Roderich Moessner (ORCID: https://orcid.org/0000-0002-6415-4784)
- Ion Errea (ORCID: https://orcid.org/0000-0002-5719-6580)
- Fedor Balakirev (ORCID: https://orcid.org/0000-0003-4887-5140)
- Philip J. W. Moll (ORCID: https://orcid.org/0000-0002-7616-5886)
- Mark H. Fischer (ORCID: https://orcid.org/0000-0003-0810-6064)
- Chunyu Guo (ORCID: https://orcid.org/0000-0001-8339-7477)
- S. Wiedmann
- Ling Zhang (ORCID: https://orcid.org/0000-0003-0935-6372)
- Titus Neupert (ORCID: https://orcid.org/0000-0003-0604-041X)
- Claudia Felser (ORCID: https://orcid.org/0000-0002-8200-2063)
- Manex Alkorta (ORCID: https://orcid.org/0009-0003-8109-9216)
- Dong Chen (ORCID: https://orcid.org/0000-0002-7170-9725)
- Takashi Oka
Institutions
- Qingdao University (CN)
- Los Alamos National Laboratory (US)
- Université de Sherbrooke (CA)
- Radboud University Nijmegen (NL)
- University of the Basque Country (ES)
- University of Zurich (CH)
- Radboud University Medical Center (NL)
- Max Planck Institute for Chemical Physics of Solids (DE)
- Radboud Institute for Molecular Life Sciences (NL)
- Max Planck Institute for the Physics of Complex Systems (DE)
- Material Physics Center (ES)
- National High Magnetic Field Laboratory (US)
- Max Planck Institute for the Structure and Dynamics of Matter (DE)
- Donostia International Physics Center (ES)
- The University of Tokyo (JP)
- Aalto University (FI)
Publication Details
- Journal
- Nature
- Published
- 2025-10-29
- DOI
- https://doi.org/10.1038/s41586-025-09659-8
- Citations
- 1
- Primary Topic
- Topological Materials and Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 1.25
Funders
- National Science Foundation
- U.S. Department of Energy
- National High Magnetic Field Laboratory
- Deutsche Forschungsgemeinschaft
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek
- Max-Planck-Gesellschaft
- Office of Science
- Division of Materials Research
- High Magnetic Field Laboratory, Chinese Academy of Sciences