FeGe as a building block for the kagome 1:1, 1:6:6, and 1:3:5 families: Hidden <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>d</mml:mi></mml:math>-orbital decoupling of flat band sectors, effective models, and interaction Hamiltoni
The authors develop here a trustworthy framework to model the electronic structure and interactions in kagome metals, starting with FeGe. By identifying symmetry-based orbital groupings, they construct minimal models that capture flat bands, von Hove singularities, and topology. Using these ``LEGO-like'' building blocks, they extend their approach to a wide range of kagome materials in the 1:1, 1:6:6, and 1:3:5 families, including MgFe${}_{6}$Ge${}_{6}$ and CsCr${}_{3}$Sb${}_{5}$. This framework provides realistic many-body models in order to explore interaction-driven phases in kagome and other materials.
Authors
- Dumitru Călugăru (ORCID: https://orcid.org/0000-0002-5897-9878)
- Haoyu Hu (ORCID: https://orcid.org/0000-0002-3787-6634)
- Yi Jiang (ORCID: https://orcid.org/0000-0003-1543-0284)
- Bogdan Andrei Bernevig (ORCID: https://orcid.org/0000-0001-6337-4024)
- Yuanfeng Xu (ORCID: https://orcid.org/0000-0002-1390-2308)
- Hongming Weng (ORCID: https://orcid.org/0000-0001-8021-9413)
- Claudia Felser (ORCID: https://orcid.org/0000-0002-8200-2063)
- S. Blanco-Canosa (ORCID: https://orcid.org/0000-0002-4437-5846)
Institutions
- Chinese Academy of Sciences (CN)
- Princeton University (US)
- Max Planck Institute for Chemical Physics of Solids (DE)
- Songshan Lake Materials Laboratory (CN)
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ)
- University of Chinese Academy of Sciences (CN)
- Donostia International Physics Center (ES)
- Zhejiang University (CN)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2025-03-31
- DOI
- https://doi.org/10.1103/physrevb.111.125163
- Citations
- 13
- Primary Topic
- Advanced Condensed Matter Physics
- Type
- article
- Field-Weighted Citation Impact
- 16.36
Funders
- National Science Foundation
- U.S. Department of Energy
- Gordon and Betty Moore Foundation
- United States - Israel Binational Science Foundation
- Princeton University
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- Eusko Jaurlaritza
- Ministerio de Economía y Competitividad
- Ministerio de Ciencia e Innovación
- Horizon 2020
- National Key Research and Development Program of China
- Fundamental Research Funds for the Central Universities
- Office of Naval Research