Observation of the critical state to multiple-type Dirac semimetal phases in KMgBi

doi:10.1063/5.0045466

	Observation of the critical state to multiple-type Dirac semimetal phases in KMgBi
	Liu, D. F.1; Wei, L. Y.2 ; Le, C. C.3; Wang, H. Y.2 ; Zhang, X.2 ; Kumar, N.3; Shekhar, C.3; Schroter, N. B. M.4; Li, Y. W.2 ; Pei, D.4; Xu, L. X.2; Dudin, P.5; Kim, T. K.5; Cacho, C.5; Fujii, J.6; Vobornik, I.6; Wang, M. X.2,7 ; Yang, L. X.8,9; Liu, Z. K.2,7 ; Guo, Y. F.2 ; Hu, J. P.10; Felser, C.3; Parkin, S. S. P.1; Chen, Y. L.2,4,7,8
	2021-06-21
发表期刊	JOURNAL OF APPLIED PHYSICS (IF:2.7[JCR-2023],2.6[5-Year])
ISSN	0021-8979
EISSN	1089-7550
卷号	129 期号:23
发表状态	已发表
DOI	10.1063/5.0045466
摘要	Dirac semimetals are classified into different phases based on the types of Dirac fermions. Tuning the transition among different types of Dirac fermions in one system remains a challenge. Recently, KMgBi was predicted to be located at a critical state in which various types of Dirac fermions can be induced owing to the existence of a flatband. Here, we carried out systematic studies on the electronic structure of KMgBi single crystals by combining angle-resolve photoemission spectroscopy and scanning tunneling microscopy/spectroscopy. The flatband was clearly observed near the Fermi level. We also revealed a small bandgap of similar to 20 meV between the flatband and the conduction band. These results demonstrate the critical states of KMgBi that transition among various types of Dirac fermions can be tuned in one system.
收录类别	SCIE ; EI
语种	英语
WOS研究方向	Physics
WOS类目	Physics, Applied
WOS记录号	WOS:000681701500001
出版者	AMER INST PHYSICS
原始文献类型	Article
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/127870
专题	物质科学与技术学院_公共科研平台_拓扑物理实验室物质科学与技术学院_PI研究组_柳仲楷组物质科学与技术学院_PI研究组_郭艳峰组物质科学与技术学院_PI研究组_于奕组物质科学与技术学院_特聘教授组_陈宇林物质科学与技术学院_博士生大科学中心_公共科研平台_大科学装置建设部
共同第一作者	Wei, L. Y.
通讯作者	Chen, Y. L.
作者单位	1.Max Planck Inst Microstruct Phys, D-06120 Halle, Germany; 2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China; 3.Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany; 4.Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England; 5.Diamond Light Source, Didcot OX110DE, Oxon, England; 6.TASC Lab Area Sci Pk, CNR IOM, I-34139 Trieste, Italy; 7.ShanghaiTech Lab Topol Phys, Shanghai 200031, Peoples R China; 8.Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China; 9.Frontier Sci Ctr Quantum Informat, Beijing 100084, Peoples R China; 10.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
通讯作者单位	物质科学与技术学院; 上海科技大学
推荐引用方式 GB/T 7714	Liu, D. F.,Wei, L. Y.,Le, C. C.,et al. Observation of the critical state to multiple-type Dirac semimetal phases in KMgBi[J]. JOURNAL OF APPLIED PHYSICS,2021,129(23).
APA	Liu, D. F..,Wei, L. Y..,Le, C. C..,Wang, H. Y..,Zhang, X..,...&Chen, Y. L..(2021).Observation of the critical state to multiple-type Dirac semimetal phases in KMgBi.JOURNAL OF APPLIED PHYSICS,129(23).
MLA	Liu, D. F.,et al."Observation of the critical state to multiple-type Dirac semimetal phases in KMgBi".JOURNAL OF APPLIED PHYSICS 129.23(2021).