The Resonance Peak in Sr${}_2$RuO${}_4$: Signature of Spin Triplet Pairing

Abstract

We study the dynamical spin susceptibility, $\chi (\mathbf{q},\omega )$, in the normal and superconducting state of Sr${}_2$RuO${}_4$. In the normal state, we find a peak in the vicinity of ${\mathbf{Q}}_i\simeq (0.72\pi ,0.72\pi )$ in agreement with recent inelastic neutron scattering (INS) experiments. We predict that for spin triplet pairing in the superconducting state a {\it resonance peak} appears in the out-of-plane component of $\chi$, but is absent in the in-plane component. In contrast, no resonance peak is expected for spin singlet pairing.

4 pages, 4 figures, final version

References in corpus (9)

• Evidence for incommensurate spin fluctuations in Sr_2RuO_4
• A polarized neutron-scattering study of the Cooper-pair moment in Sr2RuO4
• Coupling strength of charge carriers to spin fluctuations in high-temperature superconductors
• Detailed Topography of the Fermi Surface of Sr2RuO4
• Spin-triplet superconductivity in Sr${}_2$RuO${}_4$ probed by Andreev reflection
• Spin triplet superconductivity with line nodes in Sr2RuO4
• Photoemission Quasi-Particle Spectra of Sr${}_2$RuO${}_4$
• Identifying the pairing symmetry in the Sr2RuO4 superconductor
• Probing Pairing Symmetry in Sr${}_2$RuO${}_4$

Cited by in corpus (25)

• Gap symmetry and structure of Fe-based superconductors
• Neutron scattering as a probe of the Fe-pnicitide superconducting gap
• Inelastic neutron scattering study of magnetic excitations in Sr${}_2$RuO${}_4$
• Wannier Pairs in the Superconducting Twisted Bilayer Graphene and Related Systems
• Superconducting gap in LiFeAs from three-dimensional spin-fluctuation pairing calculations
• Magnetic response of Sr${}_2$RuO${}_4$: quasi-local spin fluctuations due to Hund's coupling
• Electronic theory for the normal state spin dynamics in Sr${}_2$RuO${}_4$: anisotropy due to spin-orbit coupling
• Renormalization of the elementary excitations in hole- and electron-doped cuprates due to spin fluctuations
• Inelastic neutron scattering study of the magnetic fluctuations in Sr${}_2$RuO${}_4$
• Rigid-Band Shift of the Fermi Level in a Strongly Correlated Metal: Sr(2-y)La(y)RuO(4)
• Incommensurate spin resonance in URu2Si2
• Orbital selectivity of the kink in the dispersion of Sr2RuO4
• Spin Density Wave Fluctuations and p-wave Pairing in Sr2RuO4
• Electronic theory for superconductivity in Sr${}_2$RuO${}_4$: triplet pairing due to spin-fluctuation exchange
• Feedback of superconductivity on the magnetic excitation spectrum of UTe${}_2$
• Multi-orbital nature of the spin fluctuations in Sr${}_2$RuO${}_4$
• Leading superconducting instabilities in three-dimensional models for Sr2RuO4
• Horizontal Line Nodes in Sr2RuO4 Proved by Spin Resonance
• Spin gap and L modulated intensity at the low-energy incommensurate magnetic fluctuations in the superconducting state of Sr2RuO4
• Absence of a large superconductivity-induced gap in magnetic fluctuations of Sr2RuO4
• Two-dimensional incommensurate magnetic fluctuations in Sr${}_2$(Ru${}_{0.99}$Ti${}_{0.01}$)O${}_4$
• Orbital Dependence of Quasiparticle Lifetimes in Sr2RuO4
• Impurity induced magnetic ordering in Sr${}_2$RuO${}_4$
• Low temperature electronic properties of Sr_2RuO_4 I: Microscopic model and normal state properties
• Coherence peak in the spin susceptibility from nesting in spin-triplet superconductors; A probe for line nodes in Sr${}_2$RuO${}_4$