Discovery of a Three-Dimensional Topological Dirac Semimetal, Na3Bi

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	Discovery of a Three-Dimensional Topological Dirac Semimetal, Na3Bi
	Liu, ZK ; Zhou, B ; Zhang, Y ; Wang, ZJ ; Weng, HM ; Prabhakaran, D ; Mo, SK ; Shen, ZX ; Fang, Z ; Dai, X ; Hussain, Z ; Chen, YL
刊名	SCIENCE
	2014
卷号	343 期号:6173 页码:864
ISSN号	0036-8075
通讯作者	Chen, YL (reprint author), Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England.
中文摘要	Three-dimensional (3D) topological Dirac semimetals (TDSs) represent an unusual state of quantum matter that can be viewed as "3D graphene." In contrast to 2D Dirac fermions in graphene or on the surface of 3D topological insulators, TDSs possess 3D Dirac fermions in the bulk. By investigating the electronic structure of Na3Bi with angle-resolved photoemission spectroscopy, we detected 3D Dirac fermions with linear dispersions along all momentum directions. Furthermore, we demonstrated the robustness of 3D Dirac fermions in Na3Bi against in situ surface doping. Our results establish Na3Bi as a model system for 3D TDSs, which can serve as an ideal platform for the systematic study of quantum phase transitions between rich topological quantum states.
资助信息	Engineering and Physical Sciences Research Council (UK) [EP/K04074X/1]; Defense Advanced Research Projects Agency (USA) MESO project [N66001-11-1-4105]; U.S. Department of Energy, Office of Science, Materials Sciences and Engineering Division; NSF of China; National Basic Research Program of China; International Science and Technology Cooperation Program of China
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59660]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Liu, ZK,Zhou, B,Zhang, Y,et al. Discovery of a Three-Dimensional Topological Dirac Semimetal, Na3Bi[J]. SCIENCE,2014,343(6173):864.
APA	Liu, ZK.,Zhou, B.,Zhang, Y.,Wang, ZJ.,Weng, HM.,...&Chen, YL.(2014).Discovery of a Three-Dimensional Topological Dirac Semimetal, Na3Bi.SCIENCE,343(6173),864.
MLA	Liu, ZK,et al."Discovery of a Three-Dimensional Topological Dirac Semimetal, Na3Bi".SCIENCE 343.6173(2014):864.