Low temperature electronic properties of Sr_2RuO_4 II: Superconductivity

Abstract

The body centered tetragonal structure of Sr_2RuO_4 gives rise to umklapp scattering enhanced inter-plane pair correlations in the d_{yz} and d_{zx} orbitals. Based on symmetry arguments, Hund's rule coupling, and a bosonized description of the in-plane electron correlations the superconducting order parameter is found to be a orbital-singlet spin-triplet with two spatial components. The spatial anisotropy is 7%. The different components of the order parameter give rise to two-dimensional gapless fluctuations. The phase transition is of third order. The temperature dependence of the pair density, specific heat, NQR, Knight shift, and susceptibility are in agreement with experimental results.

20 pages REVTEX, 3 figures

References in corpus (6)

• Inelastic neutron scattering study of magnetic excitations in Sr${}_2$RuO${}_4$
• Orbital Fluctuation-Induced Triplet Superconductivity : Mechanism of Superconductivity in ${\mathrm{Sr}}_2{\mathrm{RuO}}_4$
• Universal Heat Transport in Sr2RuO4
• The penetration depth in Sr2RuO4: Evidence for orbital dependent superconductivity
• Low temperature electronic properties of Sr_2RuO_4 I: Microscopic model and normal state properties
• Low temperature electronic properties of Sr_2RuO_4 III: Magnetic fields

Cited by in corpus (10)

• Evaluation of Spin-Triplet Superconductivity in Sr2RuO4
• Lattice QCD and heavy ion collisions: a review of recent progress
• Advances in perturbative thermal field theory
• The QCD Phase Boundary from Quark-Gluon Dynamics
• Identifying spin-triplet pairing in spin-orbit coupled multi-band superconductors
• Phenomenological Models of Holographic Superconductors and Hall currents
• Properties of Higher-Order Phase Transitions
• Excess current in superconducting Sr${}_2$RuO${}_4$
• Low temperature electronic properties of Sr_2RuO_4 I: Microscopic model and normal state properties
• Low temperature electronic properties of Sr_2RuO_4 III: Magnetic fields