Topological surface electronic states in candidate nodal-line semimetal CaAgAs
Author(s)
Wang, Xiao-Bo; Ma, Xiao-Ming; Emmanouilidou, Eve; Shen, Bing; Hsu, Chia-Hsiu; Zhou, Chun-Sheng; Zuo, Yi; Song, Rong-Rong; Wang, Gan; Huang, Li; Ni, Ni; Liu, Chang; Xu, Suyang; ... Show more Show less
DownloadPhysRevB.96.161112.pdf (1.484Mb)
PUBLISHER_POLICY
Publisher Policy
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Terms of use
Metadata
Show full item recordAbstract
We investigate systematically the bulk and surface electronic structure of the candidate nodal-line semimetal CaAgAs by angle-resolved photoemission spectroscopy and density functional calculations. We observed a metallic, linear, non-k[subscript z]-dispersive surface band that coincides with the high-binding-energy part of the theoretical topological surface state, proving the topological nontriviality of the system. An overall downshift of the experimental Fermi level points to a rigid-band-like p doping of the samples, due possibly to Ag vacancies in the as-grown crystals.
Date issued
2017-10Department
Massachusetts Institute of Technology. Department of PhysicsJournal
Physical Review B
Publisher
American Physical Society
Citation
Wang, Xiao-Bo et al. "Topological surface electronic states in candidate nodal-line semimetal CaAgAs." Physical Review B 96, 16 (October 2017): 161112(R) © 2017 American Physical Society
Version: Final published version
ISSN
2469-9950
2469-9969