Publication Date
2024
Journal or Book Title
Physical Review Research
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 Tc of Cooper instability in a system demonstrating simply normal Fermi liquid behavior in a broad range of temperatures below the Fermi energy TF. 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 Tc to the unprecedentedly low scale of 10−100Tf.
DOI
https://doi.org/10.1103/PhysRevResearch.6.013099
Volume
6
License
UMass Amherst Open Access Policy
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Prokof'ev, Nikolay V.; Svistunov, Boris V.; and et. al., "Precursory Cooper flow in ultralow-temperature superconductors" (2024). Physical Review Research. 1296.
https://doi.org/10.1103/PhysRevResearch.6.013099