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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2506.09973 |
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| _version_ | 1866909957318770688 |
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| author | Zhang, Yiou Xie, Chendi Bacsa, John Wang, Yao Urazhdin, Sergei |
| author_facet | Zhang, Yiou Xie, Chendi Bacsa, John Wang, Yao Urazhdin, Sergei |
| contents | We report anomalous shot noise in nanojunctions of beta-tantalum, a ``bad" metal whose electronic properties are inconsistent with the Fermi liquid theory. Fano factors cluster around even multiples of the values expected for Fermi liquids, suggesting that beta-Ta may host a correlated charge liquid of Cooper pair-like electron groups. Further evidence for correlations is provided by the effects of magnetic impurities, as well as reduced density of states near the Fermi level indicated by point contact spectroscopy and first principles calculations. Our results open new avenues for studies and applications of electron correlations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_09973 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Evidence for Bose liquid from anomalous shot noise in nanojunctions of bad metal beta-Ta Zhang, Yiou Xie, Chendi Bacsa, John Wang, Yao Urazhdin, Sergei Materials Science Mesoscale and Nanoscale Physics Strongly Correlated Electrons We report anomalous shot noise in nanojunctions of beta-tantalum, a ``bad" metal whose electronic properties are inconsistent with the Fermi liquid theory. Fano factors cluster around even multiples of the values expected for Fermi liquids, suggesting that beta-Ta may host a correlated charge liquid of Cooper pair-like electron groups. Further evidence for correlations is provided by the effects of magnetic impurities, as well as reduced density of states near the Fermi level indicated by point contact spectroscopy and first principles calculations. Our results open new avenues for studies and applications of electron correlations. |
| title | Evidence for Bose liquid from anomalous shot noise in nanojunctions of bad metal beta-Ta |
| topic | Materials Science Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2506.09973 |