| Autor: |
Cai, Xiansheng, Wang, Tao, Prokof'ev, Nikolay V., Svistunov, Boris V., Chen, Kun |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Phys. Rev. B 106, L220502 (2022) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.106.L220502 |
| Popis: |
We study the Cooper instability in jellium model in the controlled regime of small to intermediate values of the Coulomb parameter $r_s \leq 2$. We confirm that superconductivity naturally emerges from purely repulsive interactions described by the Kukkonen-Overhauser vertex function. By employing the implicit renormalization approach we reveal that even in the small-$r_s$ limit, the dominant mechanism behind Cooper instability is based on dynamic screening of the Coulomb interaction--accurately captured by the random phase approximation, whereas the Kohn-Luttinger contribution is negligibly small and, thus, not relevant. |
| Databáze: |
arXiv |
| Externí odkaz: |
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