Superconductivity in repulsive Fermi-systems at low density

2011/11/14 by M. Yu. Kagan, Kagan, M. Yu., D. V. Efremov +5
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Physics of Superconductivity and Magnetism #Quantum, superfluid, helium dynamics #Superconductivity (cond-mat.supr-con)

paper · pdf · doi:10.48550/arxiv.1111.3230

openalex publication_date 2011/11/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In the large variety of models such as 3D and 2D Fermi-gas model with hard-core repulsion, 3D and 2D Hubbard model, and Shubin-Vonsovsky model we demonstrate the possibility of triplrt p-wave pairing at low electron density. We show that the critical temperature of the p-wave pairing can be strongly increased in a spin-polarized case or in a two-band situation already at low density and reach experimentally observable values of (1-5)K. We also discuss briefly d-wave pairing and high-Tc superconductivity with Tc~100K which arises in the t-J model in the range of parameters realistic for cuprates.

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