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| Hauptverfasser: | , , , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2023
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| Online-Zugang: | https://arxiv.org/abs/2303.03624 |
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| _version_ | 1866914688760020992 |
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| author | Hou, Pengcheng Cai, Xiansheng Wang, Tao Deng, Youjin Prokof'ev, Nikolay V. Svistunov, Boris V. Chen, Kun |
| author_facet | Hou, Pengcheng Cai, Xiansheng Wang, Tao Deng, Youjin Prokof'ev, Nikolay V. Svistunov, Boris V. Chen, Kun |
| contents | Superconductivity at low temperature -- observed in lithium and bismuth, as well as in various low-density superconductors -- calls for developing reliable theoretical and experimental tools for predicting ultralow critical temperatures, $T_c$, of Cooper instability in a system demonstrating nothing but normal Fermi liquid behavior in a broad range of temperatures below the Fermi energy, $T_{\rm F}$. Equally important are controlled predictions of stability in a given Cooper channel. We identify such a protocol within the paradigm of precursory Cooper flow -- a universal ansatz describing logarithmically slow temperature evolution of the linear response of the normal state to the pair-creating perturbation. Applying this framework to the two-dimensional uniform electron gas, we reveal a series of exotic superconducting states, pushing controlled theoretical predictions of $T_c$ to the unprecedentedly low scale of $10^{-100} T_{\rm F}$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_03624 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Precursory Cooper Flow in Ultralow-Temperature Superconductors Hou, Pengcheng Cai, Xiansheng Wang, Tao Deng, Youjin Prokof'ev, Nikolay V. Svistunov, Boris V. Chen, Kun Superconductivity Superconductivity at low temperature -- observed in lithium and bismuth, as well as in various low-density superconductors -- calls for developing reliable theoretical and experimental tools for predicting ultralow critical temperatures, $T_c$, of Cooper instability in a system demonstrating nothing but normal Fermi liquid behavior in a broad range of temperatures below the Fermi energy, $T_{\rm F}$. Equally important are controlled predictions of stability in a given Cooper channel. We identify such a protocol within the paradigm of precursory Cooper flow -- a universal ansatz describing logarithmically slow temperature evolution of the linear response of the normal state to the pair-creating perturbation. Applying this framework to the two-dimensional uniform electron gas, we reveal a series of exotic superconducting states, pushing controlled theoretical predictions of $T_c$ to the unprecedentedly low scale of $10^{-100} T_{\rm F}$. |
| title | Precursory Cooper Flow in Ultralow-Temperature Superconductors |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2303.03624 |