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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2604.16837 |
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| _version_ | 1866908975883091968 |
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| author | Tanda, S. Kashimoto, S. Yamamoto, H. Inagaki, K. Nobukane, H. Fukuda, Y. |
| author_facet | Tanda, S. Kashimoto, S. Yamamoto, H. Inagaki, K. Nobukane, H. Fukuda, Y. |
| contents | The physics of a genuine one-dimensional system in which electrons are confined in one direction remains unclear. The actual electronic state of such a genuinely one-dimensional system has not been investigated in previous experiments, for they have all been conducted on quasi-one-dimensional specimens, namely in strongly anisotropic bulk crystals. Conventionally, charge-density waves (CDWs) driven by Fermi surface nesting have been considered to appear in one-dimensional electron-lattice systems. However, the CDW transitions actually observed to date have all occurred in quasi-one-dimensional systems and therefore do not directly indicate a genuine one-dimensional electronic state.
We investigated, for the first time, isolated single and double-chain NbS$_{3}$ samples using the carbon-nanotube-sheath method and discovered CDWs in both systems. In the single-chain, surprisingly, a $(1/4)b^*$ CDW was observed, in contrast to the $(1/3)b^*$ CDW that has been observed in bulk samples. In the double-chain, the coexistence of a $(1/2)b^*$ dimer structure and a $(1/3)b^*$ CDW was confirmed. This discovery represents a significant advancement in the field of low-dimensional physics, surpassing the limitations of previous studies on bulk systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_16837 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Charge-Density Waves of Single and Double NbS$_{3}$ Chains Tanda, S. Kashimoto, S. Yamamoto, H. Inagaki, K. Nobukane, H. Fukuda, Y. Mesoscale and Nanoscale Physics The physics of a genuine one-dimensional system in which electrons are confined in one direction remains unclear. The actual electronic state of such a genuinely one-dimensional system has not been investigated in previous experiments, for they have all been conducted on quasi-one-dimensional specimens, namely in strongly anisotropic bulk crystals. Conventionally, charge-density waves (CDWs) driven by Fermi surface nesting have been considered to appear in one-dimensional electron-lattice systems. However, the CDW transitions actually observed to date have all occurred in quasi-one-dimensional systems and therefore do not directly indicate a genuine one-dimensional electronic state. We investigated, for the first time, isolated single and double-chain NbS$_{3}$ samples using the carbon-nanotube-sheath method and discovered CDWs in both systems. In the single-chain, surprisingly, a $(1/4)b^*$ CDW was observed, in contrast to the $(1/3)b^*$ CDW that has been observed in bulk samples. In the double-chain, the coexistence of a $(1/2)b^*$ dimer structure and a $(1/3)b^*$ CDW was confirmed. This discovery represents a significant advancement in the field of low-dimensional physics, surpassing the limitations of previous studies on bulk systems. |
| title | Charge-Density Waves of Single and Double NbS$_{3}$ Chains |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2604.16837 |