Dual topological states in the layered titanium-based oxypnictide superconductor BaTi2Sb2O

doi:10.1038/s41535-022-00477-z

	Dual topological states in the layered titanium-based oxypnictide superconductor BaTi2Sb2O
	Huang, Z.1,2,3 ; Liu, W. L.1,2,3 ; Wang, H. Y.3 ; Su, Y. L.3 ; Liu, Z. T.1; Shi, X. B.4,5; Gao, S. Y.6; Chen, Z. Y.7; Yan, Y. J.7; Jiang, Z. C.1; Liu, Z. H.1,2; Liu, J. S.1; Lu, X. L.1; Yang, Y. C.1; Zhou, R. X.3,8 ; Xia, W.3,9 ; Huang, Y. B.10; Qiao, S.1; Zhao, W. W.4,5; Guo, Y. F.3,9 ; Li, G.3,9 ; Shen, D. W.1,2
	2022-06-28
发表期刊	NPJ QUANTUM MATERIALS
ISSN	/
EISSN	2397-4648
卷号	7 期号:1
发表状态	已发表
DOI	10.1038/s41535-022-00477-z
摘要	Topological superconductors have long been predicted to host Majorana zero modes which obey non-Abelian statistics and have potential for realizing non-decoherence topological quantum computation. However, material realization of topological superconductors is still a challenge in condensed matter physics. Utilizing high-resolution angle-resolved photoemission spectroscopy and first-principles calculations, we predict and then unveil the coexistence of topological Dirac semimetal and topological insulator states in the vicinity of Fermi energy (E) in the titanium-based oxypnictide superconductor BaTiSbO. Further spin-resolved measurements confirm its spin-helical surface states around E, which are topologically protected and give an opportunity for realization of Majorana zero modes and Majorana flat bands in one material. Hosting dual topological states, the intrinsic superconductor BaTiSbO is expected to be a promising platform for further investigation of topological superconductivity.
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收录类别	SCIE
语种	英语
Scopus 记录号	2-s2.0-85132995042
来源库	Scopus
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/216449
专题	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_李刚组物质科学与技术学院_博士生物质科学与技术学院_公共科研平台_拓扑物理实验室
通讯作者	Guo, Y. F.; Li, G.; Shen, D. W.
作者单位	1.Center for Excellence in Superconducting Electronics,State Key Laboratory of Functional Materials for Informatics,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai,200050,China 2.Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing,100049,China 3.School of Physical Science and Technology,ShanghaiTech University,Shanghai,201210,China 4.State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,Shenzhen,518055,China 5.Flexible Printed Electronics Technology Center,Harbin Institute of Technology,Shenzhen,518055,China 6.Beijing National Laboratory for Condensed Matter Physics and Institute of Physics,Chinese Academy of Sciences,Beijing,100190,China 7.Hefei National Laboratory for Physical Sciences at the Microscale,and Department of Physics,University of Science and Technology of China,Hefei,230026,China 8.Institute for Advanced Study,Tsinghua University,Beijing,100084,China 9.ShanghaiTech Laboratory for Topological Physics,ShanghaiTech University,Shanghai,201210,China 10.Shanghai Synchrotron Radiation Facility,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai,201204,China
第一作者单位	物质科学与技术学院
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	Huang, Z.,Liu, W. L.,Wang, H. Y.,et al. Dual topological states in the layered titanium-based oxypnictide superconductor BaTi2Sb2O[J]. NPJ QUANTUM MATERIALS,2022,7(1).
APA	Huang, Z..,Liu, W. L..,Wang, H. Y..,Su, Y. L..,Liu, Z. T..,...&Shen, D. W..(2022).Dual topological states in the layered titanium-based oxypnictide superconductor BaTi2Sb2O.NPJ QUANTUM MATERIALS,7(1).
MLA	Huang, Z.,et al."Dual topological states in the layered titanium-based oxypnictide superconductor BaTi2Sb2O".NPJ QUANTUM MATERIALS 7.1(2022).