中文版 | English
Title

Magnetism and charge density wave order in kagome FeGe

Author
Corresponding AuthorBirgeneau, Robert J.; Dai, Pengcheng; Yi, Ming
Publication Years
2023-03-01
DOI
Source Title
ISSN
1745-2473
EISSN
1745-2481
Abstract
["Electron correlations often lead to emergent orders in quantum materials, and one example is the kagome lattice materials where topological states exist in the presence of strong correlations between electrons. This arises from the features of the electronic band structure that are associated with the kagome lattice geometry: flat bands induced by destructive interference of the electronic wavefunctions, topological Dirac crossings and a pair of van Hove singularities. Various correlated electronic phases have been discovered in kagome lattice materials, including magnetism, charge density waves, nematicity and superconductivity. Recently, a charge density wave was discovered in the magnetic kagome FeGe, providing a platform for understanding the interplay between charge order and magnetism in kagome materials. Here we observe all three electronic signatures of the kagome lattice in FeGe using angle-resolved photoemission spectroscopy. The presence of van Hove singularities near the Fermi level is driven by the underlying magnetic exchange splitting. Furthermore, we show spectral evidence for the charge density wave as gaps near the Fermi level. Our observations point to the magnetic interaction-driven band modification resulting in the formation of the charge density wave and indicate an intertwined connection between the emergent magnetism and charge order in this moderately correlated kagome metal.","The observation of band structure features typical of the kagome lattice in FeGe suggests that an interplay of magnetism and electronic correlations determines the physics of this material."]
URL[Source Record]
Indexed By
Language
English
Important Publications
NI Journal Papers
SUSTech Authorship
Others
Funding Project
Gordon and Betty Moore Foundation's EPiQS Initiative[GBMF9470] ; Robert A. Welch Foundation["C-1839","C-2024"] ; U.S. Department of Energy (DOE)[DE-SC0021421] ; U.S. DOE["DE-AC02-05-CH11231","KC2202"] ; U.S. DOE Office of Science User Facilities["DE-AC02-05CH11231","AC02-76SF00515"] ; European Research Council[815869] ; ISF personal research grant[2932/21] ; NSF["DMR-1921798","DMR-1921847"] ; null[US NSF-DMR-2100741]
WOS Research Area
Physics
WOS Subject
Physics, Multidisciplinary
WOS Accession No
WOS:000948647800001
Publisher
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/513392
DepartmentDepartment of Physics
Affiliation
1.Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA
2.Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
3.Weizmann Inst Sci, Dept Condensed Matter Phys, Rehovot, Israel
4.Southern Univ Sci & Technol, Dept Phys, Shenzhen, Peoples R China
5.Univ Washington, Dept Phys, Seattle, WA USA
6.SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA USA
7.Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA USA
8.Oak Ridge Natl Lab, Neutron Scattering Div, Oak Ridge, TN USA
9.Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA
Recommended Citation
GB/T 7714
Teng, Xiaokun,Oh, Ji Seop,Tan, Hengxin,et al. Magnetism and charge density wave order in kagome FeGe[J]. Nature Physics,2023.
APA
Teng, Xiaokun.,Oh, Ji Seop.,Tan, Hengxin.,Chen, Lebing.,Huang, Jianwei.,...&Yi, Ming.(2023).Magnetism and charge density wave order in kagome FeGe.Nature Physics.
MLA
Teng, Xiaokun,et al."Magnetism and charge density wave order in kagome FeGe".Nature Physics (2023).
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