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  Kagome Hubbard model from a functional renormalization group perspective

Profe, J. B., Klebl, L., Grandi, F., Hohmann, H., Dürrnagel, M., Schwemmer, T., et al. (2024). Kagome Hubbard model from a functional renormalization group perspective. Physical Review Research, 6(4): 043078. doi:10.1103/PhysRevResearch.6.043078.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000E-7091-F Version Permalink: https://hdl.handle.net/21.11116/0000-0010-04E7-5
Genre: Journal Article

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© the Author(s). Published by the American Physical Society
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https://doi.org/10.1103/PhysRevResearch.6.043078 (Publisher version)
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 Creators:
Profe, J. B.1, 2, Author
Klebl, L.3, Author
Grandi, F.1, Author
Hohmann, H.4, Author
Dürrnagel, M.4, 5, Author
Schwemmer, T.4, Author
Thomale, R.4, Author
Kennes, D. M.1, 6, 7, Author           
Affiliations:
1Institut für Theorie der Statistischen Physik, RWTH Aachen University and JARA—Fundamentals of Future Information Technology, ou_persistent22              
2Institute for Theoretical Physics, Goethe University Frankfurt, ou_persistent22              
3I. Institute for Theoretical Physics, Universität Hamburg, ou_persistent22              
4Institut für Theoretische Physik und Astrophysik and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, ou_persistent22              
5Institute for Theoretical Physics, ETH Zürich, ou_persistent22              
6Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
7Center for Free-Electron Laser Science, ou_persistent22              

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 Abstract: The recent discovery of a variety of intricate electronic order in kagome metals has sprouted significant theoretical and experimental interest. From an electronic perspective on the potential microscopic origin of these phases, the most basic model is given by a Hubbard model on the kagome lattice. We employ a functional renormalization group (FRG) to analyze the kagome Hubbard model. Through our methodological refinement of FRG both within its N-patch and truncated unity formulation, we resolve previous discrepancies of different FRG approaches [Wang et al., Phys. Rev. B 87, 115135 (2013) vs Kiesel et al., Phys. Rev. Lett. 110, 126405 (2013)], and analyze both the pure (p-type) and mixed (m-type) van Hove fillings of the kagome lattice.

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Language(s): eng - English
 Dates: 2024-05-212024-02-212024-07-312024-10-30
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: arXiv: 2402.11916
DOI: 10.1103/PhysRevResearch.6.043078
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Project name : We thank A. Fischer, M. T. Bunney, F. Ferrari, J. Beyer for fruitful discussions and R. Valenti for carefully reading our manuscript. This work was supported by the Excellence Initiative of the German federal and state governments, the Ministry of Innovation of North Rhine-Westphalia and the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation). J.B.P., L.K., F.G., D.M.K. acknowledge funding by the DFG under RTG 1995, within the Priority Program SPP 2244 “2DMP”—443274199. L.K. and J.B.P. greatfully acknowledge support from the DFG through FOR 5249 (QUAST, Project No. 449872909, TP5). L.K., J.B.P. and D.M.K. gratefully acknowledge support from the DFG through SPP 2244 (Project No. 422707584). D.M.K. acknowledges support by the Max Planck-New York City Center for Nonequilibrium Quantum Phenomena. We acknowledge computational resources provided through the JARA Vergabegremium on the JARA Partition part of the supercomputer JURECA [86] at Forschungszentrum Jülich. H.H., M.D., T.S., and R.T. received funding from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through Project-ID No. 258499086 - SFB 1170 and through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter–ct.qmat Project-ID No. 390858490 - EXC 2147.
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Title: Physical Review Research
  Abbreviation : Phys. Rev. Research
Source Genre: Journal
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Publ. Info: College Park, Maryland, United States : American Physical Society (APS)
Pages: - Volume / Issue: 6 (4) Sequence Number: 043078 Start / End Page: - Identifier: ISSN: 2643-1564
CoNE: https://pure.mpg.de/cone/journals/resource/2643-1564