Experimental Observation of Electronic Structures of Kagome Metal YCr6Ge6

• 作者: Bo Zhang Dayong Liu Guobin Zhang Hongen Zhu Pengdong Wang Sheng Wang Yi Liu Yihao Wang Yimin Xiong Yuliang Li Yunbo Wu Zhe Sun
• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2020,（8）
• 所属期刊栏目: CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL,MAGNETIC, AND OPTICAL PROPERTIES
• 页码范围: 78-82
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/0256-307X/37/8/087102

摘要

Using angle-resolved photoemission spectroscopy,we study electronic structures of a Kagome metal YCr6Ge6.Band dispersions along kz direction are significant,suggesting a remarkable interlayer coupling between neighboring Kagome planes.Comparing ARPES data with first-principles calculations,we find a moderate electron correlation in this material,since band calculations must be compressed in the energy scale to reach an excellent agreement between experimental data and theoretical calculations.Moreover,as indicated by band calculations,there is a flat band in the vicinity of the Fermi level at the Γ-M-K plane in the momentum space,which could be responsible for the unusual transport behavior in YCr6Ge6.