Optical conductivity of layered topological semimetal TaNiTe$_5$
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arXiv
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| Autori principali: | , , , , , , , , , , , |
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| Natura: | Preprint |
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2025
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| author | Budić, Jakov Nasrallah, Serena Santos-Cottin, D. Mardelé, F. Le Pulkkinen, A. Minár, J. Sačer, P. Gudac, B. Barišić, N. Homes, C. C. Akrap, Ana Novak, Mario |
| author_facet | Budić, Jakov Nasrallah, Serena Santos-Cottin, D. Mardelé, F. Le Pulkkinen, A. Minár, J. Sačer, P. Gudac, B. Barišić, N. Homes, C. C. Akrap, Ana Novak, Mario |
| contents | We present an infrared spectroscopy study of the layered topological semimetal TaNiTe$_5$, a material with a quasi-one-dimensional structure and strong in-plane anisotropy. Despite its structural features, infrared reflectivity and electronic transport measurements along the $a$ and $c$ crystallographic axes show metallic behavior without evidence of reduced dimensionality. Optical conductivity reveals an anisotropic but conventional metallic response with low scattering rates and a single sharp infrared-active phonon mode at $396$ cm$^{-1}$ ($49$ meV). Ab initio calculations closely match the experimental optical data and confirm a three-dimensional electronic structure. Our results demonstrate that TaNiTe$_5$ behaves as a three-dimensional anisotropic semimetal in its electronic and optical properties. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_11105 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Optical conductivity of layered topological semimetal TaNiTe$_5$ Budić, Jakov Nasrallah, Serena Santos-Cottin, D. Mardelé, F. Le Pulkkinen, A. Minár, J. Sačer, P. Gudac, B. Barišić, N. Homes, C. C. Akrap, Ana Novak, Mario Strongly Correlated Electrons Materials Science We present an infrared spectroscopy study of the layered topological semimetal TaNiTe$_5$, a material with a quasi-one-dimensional structure and strong in-plane anisotropy. Despite its structural features, infrared reflectivity and electronic transport measurements along the $a$ and $c$ crystallographic axes show metallic behavior without evidence of reduced dimensionality. Optical conductivity reveals an anisotropic but conventional metallic response with low scattering rates and a single sharp infrared-active phonon mode at $396$ cm$^{-1}$ ($49$ meV). Ab initio calculations closely match the experimental optical data and confirm a three-dimensional electronic structure. Our results demonstrate that TaNiTe$_5$ behaves as a three-dimensional anisotropic semimetal in its electronic and optical properties. |
| title | Optical conductivity of layered topological semimetal TaNiTe$_5$ |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2511.11105 |