CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
Experimental evidence of hourglass fermion in the candidate nonsymmorphic topological insulator KHgSb
Ma, JZ; Yi, CJ; Lv, BQ; Wang, ZJ; Nie, SM; Wang, L; Kong, LY; Huang, YB; Richard, P; Zhang, P; Yaji, K; Kuroda, K; Shin, S; Weng, HM; Bernevig, BA; Shi, Y; Qian, T; Ding, H
2017
Source PublicationSCIENCE ADVANCES
ISSN2375-2548
Volume3Issue:5Pages:-
Subtype期刊论文
AbstractTopological insulators (TIs) host novel states of quantum matter characterized by nontrivial conducting boundary states connecting valence and conduction bulk bands. All TIs discovered experimentally so far rely on either time-reversal or mirror crystal symmorphic symmetry to protect massless Dirac-like boundary states. Several materials were recently proposed to be TIs with nonsymmorphic symmetry, where a glide mirror protects exotic surface fermions with hourglass-shaped dispersion. However, an experimental confirmation of this new fermion is missing. Using angle-resolved photoemission spectroscopy, we provide experimental evidence of hourglass fermions on the (010) surface of crystalline KHgSb, whereas the (001) surface has no boundary state, in agreement with first-principles calculations. Our study will stimulate further research activities of topological properties of nonsymmorphic materials.
KeywordSemimetal
DOI10.1126/sciadv.1602415
WOS KeywordSEMIMETAL
Indexed BySCI
Language英语
WOS IDWOS:000401955300019
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/28649
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
Ma, JZ,Yi, CJ,Lv, BQ,et al. Experimental evidence of hourglass fermion in the candidate nonsymmorphic topological insulator KHgSb[J]. SCIENCE ADVANCES,2017,3(5):-.
APA Ma, JZ.,Yi, CJ.,Lv, BQ.,Wang, ZJ.,Nie, SM.,...&Ding, H.(2017).Experimental evidence of hourglass fermion in the candidate nonsymmorphic topological insulator KHgSb.SCIENCE ADVANCES,3(5),-.
MLA Ma, JZ,et al."Experimental evidence of hourglass fermion in the candidate nonsymmorphic topological insulator KHgSb".SCIENCE ADVANCES 3.5(2017):-.
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