Spin Density Wave Fluctuations and p-wave Pairing in Sr2RuO4

Abstract

Recently a debate has arisen over which of the two distinct parts of the Fermi surface of Sr2RuO4, is the active part for the chiral p-wave superconductivity. Early theories proposed p-wave pairing on the two dimensional gamma-band, while a recent proposal focuses on the one dimensional (alpha,beta) bands whose nesting pockets are the source of the strong incommensurate spin density wave (SDW) fluctuations. We apply a renormalization group theory to study quasi-one dimensional repulsive Hubbard chains and explain the form of SDW fluctuations, reconciling the absence of long range order with their nesting Fermi surface. The mutual exclusion of p-wave pairing and SDW fluctuations in repulsive Hubbard chains favors the assignment of the two dimensional gamma-band as the source of p-wave pairing.

5 pages, 2 figures

References in corpus (15)

• Strong electronic correlations from Hund's coupling
• Evaluation of Spin-Triplet Superconductivity in Sr2RuO4
• Chiral P-Wave Order in Sr_2RuO_4
• The coherence-incoherence crossover and the mass-renormalization puzzles in Sr2RuO4
• Competitions in layered ruthenates: ferro- vs. antiferromagnetism and triplet vs. singlet pairing
• A polarized neutron-scattering study of the Cooper-pair moment in Sr2RuO4
• Hidden quasi one-dimensional superconductivity in Sr${}_2$RuO${}_4$
• Giant Intrinsic Spin and Orbital Hall Effects in Sr2MO4 (M=Ru,Rh,Mo)
• The role of spin-orbit coupling for the superconducting state in Sr_2RuO_4
• Inelastic neutron scattering study of magnetic excitations in Sr${}_2$RuO${}_4$
• Electronic theory for the normal state spin dynamics in Sr${}_2$RuO${}_4$: anisotropy due to spin-orbit coupling
• Properties of edge states in spin-triplet two-band superconductor
• The Resonance Peak in Sr${}_2$RuO${}_4$: Signature of Spin Triplet Pairing
• Inelastic neutron scattering study of the magnetic fluctuations in Sr${}_2$RuO${}_4$
• Probing Pairing Symmetry in Sr${}_2$RuO${}_4$

Cited by in corpus (25)

• High-resolution photoemission on Sr2RuO4 reveals correlation-enhanced effective spin-orbit coupling and dominantly local self-energies
• Stabilizing Even-Parity Chiral Superconductivity in Sr${}_2$RuO${}_4$
• Pairing symmetry and dominant band in Sr2RuO4
• Theory of superconductivity in a three-orbital model of Sr${}_2$RuO${}_4$
• Strain Control of Fermiology and Many-Body Interactions in Two-Dimensional Ruthenates
• Spin fluctuations in Sr2RuO4 from polarized neutron scattering: implications for superconductivity
• Superconducting order of ${\mathrm{Sr}}_2{\mathrm{RuO}}_4$ from a three-dimensional microscopic model
• The Kerr rotation in the unconventional superconductor Sr${}_2$RuO${}_4$
• Possible three-dimensional nematic odd-parity superconductivity in Sr${}_2$RuO${}_4$
• Exotic Cooper pairing in multi-orbital models of Sr${}_2$RuO${}_4$
• Theory of the Evolution of Superconductivity in Sr${}_2$RuO${}_4$ under Anisotropic Strain
• Superconducting pairing in Sr${}_2$RuO${}_4$ from weak to intermediate coupling
• Leggett modes and multi-band superconductivity in Sr2RuO4
• Multi-orbital nature of the spin fluctuations in Sr${}_2$RuO${}_4$
• Superconductivity in Sr${}_2$RuO${}_4$ thin film under biaxial strain
• Neutron scattering studies on spin fluctuations in Sr${}_2$RuO${}_4$
• Absence of a large superconductivity-induced gap in magnetic fluctuations of Sr2RuO4
• Multiband mean-field theory of the $d+ig$ superconductivity scenario in Sr${}_2$RuO${}_4$
• Is the anisotropy of the upper critical field of Sr${}_2$RuO${}_4$ consistent with a helical $p$-wave state?
• Hidden anomalous Hall effect in Sr${}_2$RuO${}_4$ with chiral superconductivity dominated by the Ru $d_{xy}$ orbital
• t2g-orbital model on a honeycomb lattice: application to antiferromagnet SrRu2O6
• A review of some new perspectives on the theory of superconducting Sr${}_2$RuO${}_4$
• Degeneracy between even- and odd-parity superconductivity in the quasi-1D Hubbard model and implications for Sr2RuO4
• Quantum transport signatures of chiral edge states in Sr${}_2$RuO${}_4$
• Spin Fluctuations in Sr${}_{1.8}$La${}_{0.2}$RuO${}_4$