1. Precursory Cooper flow in ultralow-temperature superconductors
- Author
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Pengcheng Hou, Xiansheng Cai, Tao Wang, Youjin Deng, Nikolay V. Prokof'ev, Boris V. Svistunov, and Kun Chen
- Subjects
Physics ,QC1-999 - Abstract
Superconductivity at low temperature—observed in lithium and bismuth, as well as in various low-density superconductors—calls for the development of reliable theoretical and experimental tools for predicting ultralow critical temperatures T_{c} of Cooper instability in a system demonstrating simply normal Fermi liquid behavior in a broad range of temperatures below the Fermi energy T_{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_{F}.
- Published
- 2024
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