Multitype Dirac fermions protected by orthogonal glide symmetries in a noncentrosymmetric system
Xia, Yunyouyou1,2,3; Cai, Xiaochan1; Li, Gang1,4
2020-07
Source PublicationPHYSICAL REVIEW B
ISSN2469-9950
EISSN2469-9969
Volume102Issue:4
Status已发表
DOI10.1103/PhysRevB.102.041201
AbstractCompared to inversion-symmetric systems, the emerging bulk Dirac point (DP) in noncentrosymmetric systems is much harder and its symmetry-protection mechanism is poorly understood. In this Rapid Communication, we propose that orthogonal glide symmetries can protect two distinct types of bulk anisotropic DPs. One is the ordinary anisotropic DP that is doubly degenerate only along one invariant axis, which results from symmetry-protected accidental band crossing. The other one is a symmetry-enforced DP fixed at a non-time-reversal-invariant point, which is doubly degenerate at three orthogonal directions. This unique topological phase is exemplified by KSnSe2 in space group 108. Our work not only unveils a unique symmetry-protection mechanism but also provides a material candidate for exploring multitype Dirac fermions in noncentrosymmetric systems.
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Indexed BySCI ; EI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFE0131300] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA18010000]
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000544516600001
PublisherAMER PHYSICAL SOC
WOS KeywordQUASI-PARTICLE INTERFERENCE ; MAJORANA FERMIONS ; SEMIMETAL ; SCHEMES ; CATALOG
Original Document TypeArticle
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://kms.shanghaitech.edu.cn/handle/2MSLDSTB/122048
Collection物质科学与技术学院_博士生
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_硕士生
Corresponding AuthorLi, Gang
Affiliation1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.ShanghaiTech Univ, ShanghaiTech Lab Topol Phys, Shanghai 201210, Peoples R China
First Author AffilicationSchool of Physical Science and Technology
Corresponding Author AffilicationSchool of Physical Science and Technology;  ShanghaiTech University
First Signature AffilicationSchool of Physical Science and Technology
Recommended Citation
GB/T 7714
Xia, Yunyouyou,Cai, Xiaochan,Li, Gang. Multitype Dirac fermions protected by orthogonal glide symmetries in a noncentrosymmetric system[J]. PHYSICAL REVIEW B,2020,102(4).
APA Xia, Yunyouyou,Cai, Xiaochan,&Li, Gang.(2020).Multitype Dirac fermions protected by orthogonal glide symmetries in a noncentrosymmetric system.PHYSICAL REVIEW B,102(4).
MLA Xia, Yunyouyou,et al."Multitype Dirac fermions protected by orthogonal glide symmetries in a noncentrosymmetric system".PHYSICAL REVIEW B 102.4(2020).
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