Optical Signature of Flat Bands in Topological Hourglass Semimetal Nb3SiTe6
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866917876282163200 |
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| author | Cao, Shize Zhang, Cuiwei Xu, Yueshan Zhao, Jianzhou Shi, Youguo Long, Yun-Ze Luo, Jianlin Chen, Zhi-Guo |
| author_facet | Cao, Shize Zhang, Cuiwei Xu, Yueshan Zhao, Jianzhou Shi, Youguo Long, Yun-Ze Luo, Jianlin Chen, Zhi-Guo |
| contents | Flat electronic bands in condensed matter provide a rich avenue for exploring novel quantum phenomena. Here, we report an optical spectroscopy study of a topological hourglass semimetal Nb3SiTe6 with the electric field of the incident light parallel to its crystalline ab-plane. The ab-plane optical conductivity spectra of Nb3SiTe6 single crystals exhibit a remarkable peak-like feature around 1.20 eV, which is mainly contributed by the direct optical transitions between the two ab-initio-calculation-derived flat bands along the momentum direction Z-U. Our results pave the way for investigating exotic quantum phenomena based on the flat bands in topological hourglass semimetals. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_16949 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Optical Signature of Flat Bands in Topological Hourglass Semimetal Nb3SiTe6 Cao, Shize Zhang, Cuiwei Xu, Yueshan Zhao, Jianzhou Shi, Youguo Long, Yun-Ze Luo, Jianlin Chen, Zhi-Guo Materials Science Strongly Correlated Electrons Flat electronic bands in condensed matter provide a rich avenue for exploring novel quantum phenomena. Here, we report an optical spectroscopy study of a topological hourglass semimetal Nb3SiTe6 with the electric field of the incident light parallel to its crystalline ab-plane. The ab-plane optical conductivity spectra of Nb3SiTe6 single crystals exhibit a remarkable peak-like feature around 1.20 eV, which is mainly contributed by the direct optical transitions between the two ab-initio-calculation-derived flat bands along the momentum direction Z-U. Our results pave the way for investigating exotic quantum phenomena based on the flat bands in topological hourglass semimetals. |
| title | Optical Signature of Flat Bands in Topological Hourglass Semimetal Nb3SiTe6 |
| topic | Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2412.16949 |