Spin-orbit coupling induced enhancement of superconductivity in a two-dimensional repulsive gas of fermions

Abstract

We study a model of a two-dimensional repulsive Fermi gas with Rashba spin-orbit coupling ${\alpha }_R$, and investigate the superconducting instability using renormalization group approach. We find that in general superconductivity is enhanced as the dimensionless ratio 1/2mα_R^2/E_F$ increases, resulting in unconventional superconducting states which break time reversal symmetry.

5 pages, 4 figures

References in corpus (3)

• Coexistence of Magnetic Order and Two-dimensional Superconductivity at LaAlO${}_3$/SrTiO${}_3$ Interfaces
• Superconductivity in the repulsive Hubbard model: an asymptotically exact weak-coupling solution
• Superconductivity from repulsive interactions in the two dimensional electron gas

Cited by in corpus (14)

• Superconductivity and spin-orbit coupling in non-centrosymmetric materials: a review
• Time-Reversal-Symmetry-Breaking Superconductivity in Epitaxial Bismuth/Nickel Bilayers
• Effects of longer-range interactions on unconventional superconductivity
• Spin-orbit coupled superconductivity: Rashba-Hubbard model on the square lattice
• Competing superconducting phases in interacting two-dimensional electron gas with strong Rashba spin-orbit coupling
• Unconventional superconductivity in a two-dimensional repulsive gas of fermions with spin-orbit coupling
• Functional renormalization and mean-field approach to multiband systems with spin-orbit coupling: Application to the Rashba model with attractive interaction
• Topological superconductivity on the honeycomb lattice: Effect of normal state topology
• Zeeman field induced non-trivial topology in a spin-orbit coupled superconductor
• Chern number landscape of spin-orbit coupled chiral superconductors
• Altermagnet-Superconductor Heterostructure: a Scalable Platform for Braiding of Majorana Modes
• p-wave superconductivity in weakly repulsive 2D Hubbard model with Zeeman splitting and weak Rashba spin-orbit coupling
• Superconductivity in a two-dimensional repulsive Rashba gas at low electron density
• Superfluid-insulator transition and the BEC-BCS crossover in the Rashba moat band