| Title | Fermi-level flat band in a kagome magnet |
| Author | |
| Corresponding Author | Y. M. Xiong; N. Xu |
| Joint first author | T. Y. Yang; Q. Wan |
| Publication Years | 2022-11-18
|
| DOI | |
| Source Title | |
| ISSN | 2731-6106
|
| Volume | 1Issue:1 |
| Abstract | The band structure in a kagome lattice can naturally exhibit flat band, Dirac cones, and van Hove singularity, enabling rich interplays between correlation and topology. However, the flat band is rarely detected just at the Fermi level in kagome materials, which would be crucial to realize emergent flat band physics. Here, combining angle-resolved photoemission spectroscopy, transport measurements and first-principles calculation, we observe a striking Fermi-level flat band in paramagnetic YCr6Ge6 as a typical signature of electronic kagome lattice. We explicitly unveil that orbital character plays an essential role to realize electronic kagome lattice in crystals with transition-metal kagome layers. We further engineer this material with magnetic rare earth elements to break the time-reversal symmetry of the Fermi-level kagome flat band. Our work establishes a Fermi-level flat band in a kagome magnet as an exciting quantum platform. |
| URL | [Source Record] |
| Indexed By | |
| Language | English
|
| SUSTech Authorship | Others
|
| Publisher | |
| Data Source | 人工提交
|
| Citation statistics |
Cited Times [WOS]:0
|
| Document Type | Journal Article |
| Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/415988 |
| Department | Department of Physics |
| Affiliation | 1.Institute for Advanced Studies, Wuhan University, Wuhan 430072, China. 2.Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China. 3.Department of Physics, School of Physics and Optoelectronics Engineering, Anhui University, Hefei 230601, China. 4.School of Physics and Technology, Wuhan University, Wuhan 430072, China. 5.Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland. 6.Analytical and Testing Center, Chongqing University, Chongqing 401331, China. 7.Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China. 8.National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, China. 9.Laboratory for Quantum Emergence, Department of Physics, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China 10.Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China. 11.Hefei National Laboratory, Hefei 230028, China. 12.Wuhan Institute of Quantum Technology, Wuhan 430206, China |
| Recommended Citation GB/T 7714 |
T. Y. Yang,Q. Wan,J. P. Song,et al. Fermi-level flat band in a kagome magnet[J]. Quantum Frontiers,2022,1(1).
|
| APA |
T. Y. Yang.,Q. Wan.,J. P. Song.,Z. Du.,J. Tang.,...&N. Xu.(2022).Fermi-level flat band in a kagome magnet.Quantum Frontiers,1(1).
|
| MLA |
T. Y. Yang,et al."Fermi-level flat band in a kagome magnet".Quantum Frontiers 1.1(2022).
|
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