Topological surface electronic states in candidate nodal-line semimetal CaAgAs
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 hi...
| Main Authors: | , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2018
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| Online Access: | http://hdl.handle.net/1721.1/113086 |
| _version_ | 1811081119136743424 |
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| author | 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 |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics 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 |
| author_sort | Wang, Xiao-Bo |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T11:41:50Z |
| format | Article |
| id | mit-1721.1/113086 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:41:50Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1130862022-09-27T21:19:13Z Topological surface electronic states in candidate nodal-line semimetal CaAgAs 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 Massachusetts Institute of Technology. Department of Physics Xu, Suyang 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. United States. Department of Energy. Office of Basic Energy Sciences (Grant DE-SC0011978) 2018-01-12T16:27:51Z 2018-01-12T16:27:51Z 2017-10 2017-08 2017-11-14T22:44:04Z Article http://purl.org/eprint/type/JournalArticle 2469-9950 2469-9969 http://hdl.handle.net/1721.1/113086 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 en http://dx.doi.org/10.1103/PhysRevB.96.161112 Physical Review B 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. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | 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 Topological surface electronic states in candidate nodal-line semimetal CaAgAs |
| title | Topological surface electronic states in candidate nodal-line semimetal CaAgAs |
| title_full | Topological surface electronic states in candidate nodal-line semimetal CaAgAs |
| title_fullStr | Topological surface electronic states in candidate nodal-line semimetal CaAgAs |
| title_full_unstemmed | Topological surface electronic states in candidate nodal-line semimetal CaAgAs |
| title_short | Topological surface electronic states in candidate nodal-line semimetal CaAgAs |
| title_sort | topological surface electronic states in candidate nodal line semimetal caagas |
| url | http://hdl.handle.net/1721.1/113086 |
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