Unveiling resilient superconducting fluctuations in atomically thin NbSe$_2$ through Higgs mode spectroscopy
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arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909493126758400 |
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| author | Du, Yu Liu, Gan Ruan, Wei Fang, Zhi Watanabe, Kenji Taniguchi, Takashi Liu, Ronghua Li, Jian-Xin Xi, Xiaoxiang |
| author_facet | Du, Yu Liu, Gan Ruan, Wei Fang, Zhi Watanabe, Kenji Taniguchi, Takashi Liu, Ronghua Li, Jian-Xin Xi, Xiaoxiang |
| contents | We report a combined electrical transport and optical study of the superconductivity in atomically thin NbSe$_2$. When subjected to an out-of-plane magnetic field, an anomalous metallic state emerges, characterized by a finite longitudinal resistance and a vanishing Hall resistance, suggesting the presence of particle-hole symmetry. We establish a superconducting Higgs mode in atomically thin samples, which reveals enduring superconducting fluctuations that withstand unexpectedly high reduced magnetic fields. These findings provide evidence of robust locally paired electrons in the anomalous metallic state, affirming its bosonic nature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_09868 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Unveiling resilient superconducting fluctuations in atomically thin NbSe$_2$ through Higgs mode spectroscopy Du, Yu Liu, Gan Ruan, Wei Fang, Zhi Watanabe, Kenji Taniguchi, Takashi Liu, Ronghua Li, Jian-Xin Xi, Xiaoxiang Superconductivity Mesoscale and Nanoscale Physics We report a combined electrical transport and optical study of the superconductivity in atomically thin NbSe$_2$. When subjected to an out-of-plane magnetic field, an anomalous metallic state emerges, characterized by a finite longitudinal resistance and a vanishing Hall resistance, suggesting the presence of particle-hole symmetry. We establish a superconducting Higgs mode in atomically thin samples, which reveals enduring superconducting fluctuations that withstand unexpectedly high reduced magnetic fields. These findings provide evidence of robust locally paired electrons in the anomalous metallic state, affirming its bosonic nature. |
| title | Unveiling resilient superconducting fluctuations in atomically thin NbSe$_2$ through Higgs mode spectroscopy |
| topic | Superconductivity Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2502.09868 |