Symmetry-enforced electronic nodal straight lines in CsNb3SBr7
We propose the quaternary-compounds CsNb _3 SBr _7 is a nodal-straight-line semimetal candidate based on the first-principles calculations and symmetry analyses. There are a pair of nodal straight lines locate in the k _z = 0 plane of Brillouin zone, which is protected by the crystal symmetry. The t...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/ac919d |
| _version_ | 1797748460532793344 |
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| author | Qiulin Yuan Zhenwei Wang Zhengxuan Wang Xianbiao Shi Guangtao Wang |
| author_facet | Qiulin Yuan Zhenwei Wang Zhengxuan Wang Xianbiao Shi Guangtao Wang |
| author_sort | Qiulin Yuan |
| collection | DOAJ |
| description | We propose the quaternary-compounds CsNb _3 SBr _7 is a nodal-straight-line semimetal candidate based on the first-principles calculations and symmetry analyses. There are a pair of nodal straight lines locate in the k _z = 0 plane of Brillouin zone, which is protected by the crystal symmetry. The topological properties of nodal-straight-line state are characterized by the nontrivial Berry phase and Berry curvature. On the (001) surface of CsNb _3 SBr _7 , Fermi arcs form the belt-like surface state, connecting the nodal straight lines with opposite chirality. Furthermore, the Hofstadter’s butterfly and optical conductivity are investigated using a slab sample. These results not only reveal the symmetric protection mechanism of nodal straight lines, but also pave a way for exploring the electronic and optical properties of CsNb _3 SBr _7 in further condensed matter physics experiments. |
| first_indexed | 2024-03-12T16:05:05Z |
| format | Article |
| id | doaj.art-eeecc6fea49746fba802624e66a1d023 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:05:05Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-eeecc6fea49746fba802624e66a1d0232023-08-09T14:25:37ZengIOP PublishingNew Journal of Physics1367-26302022-01-0124909303310.1088/1367-2630/ac919dSymmetry-enforced electronic nodal straight lines in CsNb3SBr7Qiulin Yuan0Zhenwei Wang1Zhengxuan Wang2Xianbiao Shi3https://orcid.org/0000-0003-0017-2163Guangtao Wang4College of Physics, Henan Normal University , Xinxiang, Henan 453007, People’s Republic of ChinaDepartment of Physics, Anhui Normal University , Wuhu 241000, People’s Republic of ChinaCollege of Physics, Henan Normal University , Xinxiang, Henan 453007, People’s Republic of ChinaKey Laboratory of Micro-Systems and Micro-Structures Manufacturing of Ministry of Education, Harbin Institute of Technology , Harbin 150001, People’s Republic of ChinaCollege of Physics, Henan Normal University , Xinxiang, Henan 453007, People’s Republic of ChinaWe propose the quaternary-compounds CsNb _3 SBr _7 is a nodal-straight-line semimetal candidate based on the first-principles calculations and symmetry analyses. There are a pair of nodal straight lines locate in the k _z = 0 plane of Brillouin zone, which is protected by the crystal symmetry. The topological properties of nodal-straight-line state are characterized by the nontrivial Berry phase and Berry curvature. On the (001) surface of CsNb _3 SBr _7 , Fermi arcs form the belt-like surface state, connecting the nodal straight lines with opposite chirality. Furthermore, the Hofstadter’s butterfly and optical conductivity are investigated using a slab sample. These results not only reveal the symmetric protection mechanism of nodal straight lines, but also pave a way for exploring the electronic and optical properties of CsNb _3 SBr _7 in further condensed matter physics experiments.https://doi.org/10.1088/1367-2630/ac919dtopological materialsnodal-straight-line semimetalsnonsymorphic symmetryBerry phaseHofstadter’s butterflyoptical conductivity |
| spellingShingle | Qiulin Yuan Zhenwei Wang Zhengxuan Wang Xianbiao Shi Guangtao Wang Symmetry-enforced electronic nodal straight lines in CsNb3SBr7 New Journal of Physics topological materials nodal-straight-line semimetals nonsymorphic symmetry Berry phase Hofstadter’s butterfly optical conductivity |
| title | Symmetry-enforced electronic nodal straight lines in CsNb3SBr7 |
| title_full | Symmetry-enforced electronic nodal straight lines in CsNb3SBr7 |
| title_fullStr | Symmetry-enforced electronic nodal straight lines in CsNb3SBr7 |
| title_full_unstemmed | Symmetry-enforced electronic nodal straight lines in CsNb3SBr7 |
| title_short | Symmetry-enforced electronic nodal straight lines in CsNb3SBr7 |
| title_sort | symmetry enforced electronic nodal straight lines in csnb3sbr7 |
| topic | topological materials nodal-straight-line semimetals nonsymorphic symmetry Berry phase Hofstadter’s butterfly optical conductivity |
| url | https://doi.org/10.1088/1367-2630/ac919d |
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