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DOI	10.1126/science.1245085
	Discovery of a three-dimensional topological dirac semimetal, Na 3Bi
	Liu Z.K.; Zhou B.; Zhang Y.; Wang Z.J.; Weng H.M.; Prabhakaran D.; Mo S.-K.; Shen Z.X.; Fang Z.; Dai X.; Hussain Z.; Chen Y.L.
发表日期	2014
ISSN	0036-8075
起始页码	864
结束页码	867
卷号	343 期号:6173
英文摘要	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.
英文关键词	bismuth; graphene; metal; quantum dot; semimetal; sodium; unclassified drug; atomic emission spectroscopy; carbon; quantum mechanics; three-dimensional modeling; angle resolved photoemission spectroscopy; article; chemical analysis; chemical structure; dispersion; fermion; phase transition; priority journal; spectroscopy; three dimensional imaging
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244564
作者单位	Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, United States; Physics Department, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States; Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; Collaborative Innovation Center of Quantum Matter, Beijing, China; Diamond Light Source and Rutherford Appleton Laboratory, Didcot, United Kingdom
推荐引用方式 GB/T 7714	Liu Z.K.,Zhou B.,Zhang Y.,et al. Discovery of a three-dimensional topological dirac semimetal, Na 3Bi[J],2014,343(6173).
APA	Liu Z.K..,Zhou B..,Zhang Y..,Wang Z.J..,Weng H.M..,...&Chen Y.L..(2014).Discovery of a three-dimensional topological dirac semimetal, Na 3Bi.Science,343(6173).
MLA	Liu Z.K.,et al."Discovery of a three-dimensional topological dirac semimetal, Na 3Bi".Science 343.6173(2014).