Theory of chiral $p$-wave superconductivity with near-nodes for Sr${}_2$RuO${}_4$

Abstract

We use functional renormalization group method to study a three-orbital model for superconducting Sr${}_2$RuO${}_4$. Although the pairing symmetry is found to be chiral $p$-wave, the atomic spin-orbit coupling induces near-nodes for quasiparticle excitations. Our theory explains a major experimental puzzle between $d$-wave-like feature observed in thermal experiments and the chiral $p$-wave triplet pairing revealed in nuclear-magnetic-resonance and Kerr effect.

6 pages, 5 figures

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• Pairing symmetry and dominant band in Sr2RuO4
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• Suppression of spontaneous currents in Sr${}_2$RuO${}_4$ by surface disorder
• Determining the Surface-To-Bulk Progression in the Normal-State Electronic Structure of Sr2RuO4 by Angle-Resolved Photoemission and Density Functional Theory
• Time reversal invariant topological superconductivity in correlated non-centrosymmetric systems
• Spontaneous edge current in a small chiral superconductor with a rough surface
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Cited by in corpus (31)

• A proposal for reconciling diverse experiments on the superconducting state in Sr2RuO4
• Knight Shift and Leading Superconducting Instability From Spin Fluctuations in Sr2RuO4
• Spin-triplet $f$-wave pairing in twisted bilayer graphene near 1/4 filling
• Superconducting state of Sr${}_2$RuO${}_4$ in the presence of longer-range Coulomb interactions
• Experimental Detection of the Quantum Phases of a Three-Dimensional Topological Insulator on a Spin Quantum Simulator
• Theory of Strain-Induced Magnetic Order and Splitting of $T_c$ and $T_{\mathrm{TRSB}}$ in Sr${}_2$RuO${}_4$
• Spin-orbit coupling and spin-triplet pairing symmetry in $\mathrm{S}{\mathrm{r}}_2\mathrm{Ru}{\mathrm{O}}_4$
• Exotic Cooper pairing in multi-orbital models of Sr${}_2$RuO${}_4$
• Leading superconducting instabilities in three-dimensional models for Sr2RuO4
• divERGe implements various Exact Renormalization Group examples
• A functional renormalization group study of the two dimensional Su-Schrieffer-Heeger-Hubbard model
• Neutron scattering studies on spin fluctuations in Sr${}_2$RuO${}_4$
• Hidden anomalous Hall effect in Sr${}_2$RuO${}_4$ with chiral superconductivity dominated by the Ru $d_{xy}$ orbital
• A microscopic Ginzburg--Landau theory and singlet ordering in Sr${}_2$RuO${}_4$
• Higher angular momentum pairing states in Sr${}_2$RuO${}_4$ in the presence of longer-range interactions
• Multipole-fluctuation pairing mechanism of $d_{x^2-y^2}+ig$ superconductivity in Sr${}_2$RuO${}_4$
• Inter-orbital p- and d-wave pairings between $d_{xz/yz}$ and $d_{xy}$ orbitals in Sr${}_2$RuO${}_4$
• Competition between d-wave superconductivity and magnetism in uniaxially strained Sr2RuO4
• Spin susceptibility for orbital-singlet Cooper pair in the three-dimensional Sr${}_2$RuO${}_4$ superconductor
• Possibility of mixed helical p-wave pairings in Sr${}_2$RuO${}_4$
• Fluctuation-driven superconductivity in Sr${}_2$RuO${}_4$ from weak repulsive interactions
• A review of some new perspectives on the theory of superconducting Sr${}_2$RuO${}_4$
• Majorana excitons in a Kitaev chain of semiconductor quantum dots in a nanowire
• Possible two-component spin-singlet pairings in Sr2RuO4
• Magic angle of Sr${}_2$RuO${}_4$: Optimizing correlation-driven superconductivity
• Surface State of Inter-orbital Pairing State in Sr${}_2$RuO${}_4$ Superconductor
• Superconducting gap anisotropy and topological singularities due to lattice translational symmetry and their thermodynamic signatures
• Charge bond order and s-wave superconductivity in the kagome lattice with electron-phonon coupling and electron-electron interaction
• Nonlocal electrodynamics and the penetration depth of superconducting Sr${}_2$RuO${}_4$
• Consistent combination of truncated-unity functional renormalization group and mean-field theory
• Distinguishing $d_{xz}+i{d}_{yz}$ and $d_{x^2-y^2}$ pairing in $S{r}_{2}Ru{O}_4$ by high magnetic field H-T phase diagrams