Unusual electronic structure of Dirac material BaMnSb2 revealed by angle-resolved photoemission spectroscopy

• 作者: Hongtao Rong Liqin Zhou Junbao He Chunyao Song Yu Xu Yongqing Cai Cong Li Qingyan Wang Lin Zhao Guodong Liu Zuyan Xu Genfu Chen Hongming Weng Xingjiang Zhou
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: RAPID COMMUNICATION
• 页码范围: 58-64
• 页数: 7页
• 语种: 英文
• DOI: 10.1088/1674-1056/ac0036

摘要

High resolution angle resolved photoemission measurements and band structure calculations are carried out to study the electronic structure of BaMnSb2.All the observed bands are nearly linear that extend to a wide energy range.The measured Fermi surface mainly consists of one hole pocket around F and a strong spot at Y which are formed from the crossing points of the linear bands.The measured electronic structure of BaMnSb2 is unusual and deviates strongly from the band structure calculations.These results will stimulate further efforts to theoretically understand the electronic structure of BaMnSb2 and search for novel properties in this Dirac material.