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  Correlated order at the tipping point in the kagome metal CsV3Sb5

Guo, C., Wagner, G., Putzke, C., Chen, D., Wang, K., Zhang, L., et al. (2024). Correlated order at the tipping point in the kagome metal CsV3Sb5. Nature Physics, 20(4), 579-584. doi:10.1038/s41567-023-02374-z.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000C-E73F-A Version Permalink: https://hdl.handle.net/21.11116/0000-000F-2A18-8
Genre: Journal Article

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Supplementary information: Supplementary Fig. 1, Discussion and Tables 1–2. (pdf) | Source data: Source Data Fig. 1: Raw data for resistivity measurements. (txt); Source Data Fig. 3: Data for scaled magneto-anisotropy. (txt); Source Data Fig. 4: (a) S1 to S4, data for the temperature dependence of resistivity anisotropy. (b) Theory, data for theoretically predicted anisotropy versus scaled temperature. (txt)
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 Creators:
Guo, C.1, Author           
Wagner, G.2, Author
Putzke, C.1, Author           
Chen, D.3, 4, Author
Wang, K.1, Author           
Zhang, L.1, Author           
Gutierrez-Amigo, M.5, 6, Author
Errea, I.5, 7, 8, Author
Vergniory, M. G.3, 7, Author
Felser, C.3, Author
Fischer, M. H.2, Author
Neupert, T.2, Author
Moll, P. J. W.1, Author           
Affiliations:
1Microstructured Quantum Matter Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3336858              
2Department of Physics, University of Zürich, ou_persistent22              
3Max Planck Institute for Chemical Physics of Solids, ou_persistent22              
4College of Physics, Qingdao University, ou_persistent22              
5Centro de Física de Materiales (CSIC-UPV/EHU), ou_persistent22              
6Department of Physics, University of the Basque Country (UPV/EHU), ou_persistent22              
7Donostia International Physics Center, ou_persistent22              
8Fisika Aplikatua Saila, Gipuzkoako Ingeniaritza Eskola, University of the Basque Country (UPV/EHU), ou_persistent22              

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 Abstract: Spontaneously broken symmetries are at the heart of many phenomena of quantum matter and physics more generally. However, determining the exact symmetries that are broken can be challenging due to imperfections such as strain, in particular when multiple electronic orders are competing. This is exemplified by charge order in some kagome systems, where evidence of nematicity and flux order from orbital currents remains inconclusive due to contradictory measurements. Here we clarify this controversy by fabricating highly symmetric samples of a member of this family, CsV3Sb5, and measuring their transport properties. We find that a measurable anisotropy is absent at any temperature in the unperturbed material. However, a pronounced in-plane transport anisotropy appears when either weak magnetic fields or strains are present. A symmetry analysis indicates that a perpendicular magnetic field can indeed lead to in-plane anisotropy by inducing a flux order coexisting with more conventional bond order. Our results provide a unifying picture for the controversial charge order in kagome metals and highlight the need for materials control at the microscopic scale in the identification of broken symmetries.

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Language(s): eng - English
 Dates: 2023-04-112023-12-082024-01-312024-04
 Publication Status: Issued
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: arXiv: 2304.00972
DOI: 10.1038/s41567-023-02374-z
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Project name : -
Grant ID : 715730
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)
Project name : -
Grant ID : 757867
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)
Project name : This work was funded by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (MiTopMat—grant agreement No. 715730 and PARATOP—grant agreement No. 757867). This project received funding by the Swiss National Science Foundation (Grants No. PP00P2_176789). M.G.V., I. E. and M.G.A. acknowledge the Spanish Ministerio de Ciencia e Innovacion (grant PID2019-109905GB-C21). M.G.V., C.F. and T.N. acknowledge support from FOR 5249 (QUAST) lead by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation). M.G.V. acknowledges partial support to European Research Council grant agreement no. 101020833. This work has been supported in part by Basque Government grant IT979-16. This work was also supported by the European Research Council Advanced Grant (No. 742068) TOPMAT, the Deutsche Forschungsgemeinschaft (Project-ID No. 247310070) SFB 1143 and the DFG through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat (EXC 2147, Project-ID No. 390858490). Open access funding provided by Max Planck Society.
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Title: Nature Physics
  Other : Nat. Phys.
Source Genre: Journal
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Pages: - Volume / Issue: 20 (4) Sequence Number: - Start / End Page: 579 - 584 Identifier: ISSN: 1745-2473
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000025850