Interband proximity effect and nodes of superconducting gap in Sr2RuO4

Abstract

The power-law temperature dependences of the specific heat, the nuclear relaxation rate, and the thermal conductivity suggest the presence of line nodes in the superconducting gap of Sr2RuO4. These recent experimental observations contradict the scenario of a nodeless (k_x+ik_y)-type superconducting order parameter. We propose that interaction of superconducting order parameters on different sheets of the Fermi surface is a key to understanding the above discrepancy. A full gap exists in the active band, which drives the superconducting instability, while line nodes develop in passive bands by interband proximity effect.

arXiv comment4 pages, 1 figure

References in corpus (10)

• Time-Reversal Symmetry Breaking Superconductivity in Sr2RuO4
• Ferromagnetic spin fluctuation induced superconductivity in Sr_2RuO_4
• Orbital dependent superconductivity in Sr_2RuO_4
• Competitions in layered ruthenates: ferro- vs. antiferromagnetism and triplet vs. singlet pairing
• Superconducting Gap Structure of Spin-Triplet Superconductor Sr_2RuO_4 Studied by Thermal Conductivity
• Detailed Topography of the Fermi Surface of Sr2RuO4
• Spin triplet superconductivity with line nodes in Sr2RuO4
• Anisotropy of magnetothermal conductivity in Sr2RuO4
• Identifying the pairing symmetry in the Sr2RuO4 superconductor
• Impurities and orbital dependent superconductivity in Sr_2RuO_4

Cited by in corpus (92)

• Evaluation of Spin-Triplet Superconductivity in Sr2RuO4
• Strong Peak in $T_c$ of Sr${}_2$RuO${}_4$ Under Uniaxial Pressure
• Theory of Superconductivity in Strongly Correlated Electron Systems
• Upper limit on spontaneous supercurrents in Sr${}_2$RuO${}_4$
• Quasi-Particle Spectra, Charge-Density-Wave, Superconductivity and Electron-Phonon Coupling in 2H-NbSe2
• Gap Structure of the Spin-Triplet Superconductor Sr2RuO4 Determined from the Field-Orientation Dependence of Specific Heat
• Nodes in the gap structure of the iron-arsenide superconductor Ba(Fe_{1-x}Co_x)_2As_2 from c-axis heat transport measurements
• Determination of the Superconducting Gap Structure in All Bands of the Spin-Triplet Superconductor Sr2RuO4
• Interlayer Coupling and p-wave Pairing in Strontium Ruthenate
• Inelastic neutron scattering study of magnetic excitations in Sr${}_2$RuO${}_4$
• Is Sr2RuO4 a Chiral P-Wave Superconductor?
• Theory of superconductivity in a three-orbital model of Sr${}_2$RuO${}_4$
• Universal Heat Transport in Sr2RuO4
• Vertical line nodes in the superconducting gap structure of Sr2RuO4
• Intrinsic Hall effect in a multiband chiral superconductor in the absence of an external magnetic field
• Feshbach resonances and mesoscopic phase separation near a quantum critical point in multiband FeAs-based superconductors
• Microscopic Identification of the D-vector in Triplet Superconductor Sr_2RuO_4
• Incommensurate magnetic ordering in Sr_2Ru_(1-x)Ti_xO_4
• Normal State Correlated Electronic Structure of Iron Pnictides
• Phase-sensitive tests of the pairing state symmetry in Sr2RuO4
• Superconducting order parameter of Sr${}_2$RuO${}_4$: a microscopic perspective
• Searching for gap zeros in Sr2RuO4 via field-angle-dependent specific-heat measurement
• Bulk electronic state of superconducting topological insulator
• Electronic theory for the normal state spin dynamics in Sr${}_2$RuO${}_4$: anisotropy due to spin-orbit coupling
• Angular dependence of the upper critical field of Sr2RuO4
• Nodeless spin triplet superconducting gap in Sr2RuO4
• Interface superconductivity in the eutectic Sr2RuO4-Ru: 3-K phase of Sr2RuO4
• Absence of orbital-selective Mott transition in Ca_2-xSr_xRuO4
• Vortex structure in chiral p-wave superconductors
• Theory of chiral $p$-wave superconductivity with near-nodes for Sr${}_2$RuO${}_4$
• Field dependence of the vortex structure in chiral p-wave superconductors
• Theory of Multiband Superconductivity in Iron Pnictides
• The Kerr rotation in the unconventional superconductor Sr${}_2$RuO${}_4$
• Spin-Orbit Coupling and Symmetry of the Order Parameter in Strontium Ruthenate
• Dislocations and the enhancement of superconductivity in odd-parity superconductor Sr${}_2$RuO${}_4$
• Edge states and determination of pairing symmetry in superconducting Sr2RuO4
• Possible three-dimensional nematic odd-parity superconductivity in Sr${}_2$RuO${}_4$
• Superconductivity in Sr${}_2$RuO${}_4$ Mediated by Coulomb Scattering
• Vortex coalescence and type-1.5 superconductivity in Sr2RuO4
• Supercurrent in Nodal Superconductors
• Exotic Cooper pairing in multi-orbital models of Sr${}_2$RuO${}_4$
• Superconducting pairing in Sr${}_2$RuO${}_4$ from weak to intermediate coupling
• Electron-Phonon Interaction and Ultrasonic Attenuation in the Ruthenate and Cuprate superconductors
• Electronic theory for superconductivity in Sr${}_2$RuO${}_4$: triplet pairing due to spin-fluctuation exchange
• Pauli-paramagnetic effects on mixed state properties in a strongly anisotropic superconductor ---Application to Sr_2_RuO_4_---
• Theory of Transport Properties in the p-wave Superconducting State of Sr2RuO4 - A Microscopic Determination of the Gap Structure -
• Superconductivity in Sr2RuO4-Sr3Ru2O7 eutectic crystals
• Leggett modes and multi-band superconductivity in Sr2RuO4
• Quasi-classical determination of the in-plane magnetic field phase diagram of superconducting Sr_2RuO_4
• Dynamical obstruction in a constrained system and its realization in lattices of superconducting devices
• Magnetic field induced rotation of the d-vector in the spin triplet superconductor Sr${}_2$RuO${}_4$
• Determining the superconducting gap structure in Sr2RuO4 from sound attenuation studies below Tc
• Anomalous Hall conductivity of clean Sr2RuO4 at finite temperatures
• The penetration depth in Sr2RuO4: Evidence for orbital dependent superconductivity
• Influence of gap structures to specific heat in oriented magnetic fields: Application to the orbital dependent superconductor, Sr${}_2$RuO${}_4$
• Low temperature electronic properties of Sr_2RuO_4 II: Superconductivity
• Anisotropy and multiband superconductivity in Sr2RuO4
• Simultaneous Evidence for Pauli Paramagnetic Effects and Multiband Superconductivity in KFe${}_2$As${}_2$ by Small-Angle Neutron Scattering Studies of the Vortex Lattice
• Raman Spectra of Triplet Superconductor 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
• Elementary vortex pinning potential in a chiral p-wave superconductor
• Horizontal line nodes in superconducting Sr2RuO4
• Interplay between effective mass anisotropy and Pauli paramagnetic effects in a multiband superconductor--Application to Sr2RuO4--
• Possibility of mixed helical p-wave pairings in Sr${}_2$RuO${}_4$
• Triplet Pairing Superconductivity Induced by Short-Range Ferromagnetic Correlations in Sr${}_2$RuO${}_4$
• Critical Current of the Spin-Triplet Superconducting Phase in Sr${}_2$RuO${}_4$
• Interband Coulomb Interaction and Horizontal Line Nodes in Triplet Superconductor Sr${}_2$RuO${}_4$
• The spin-triplet superconductivity induced by the charge fluctuation in extended Hubbard model
• First-Principles Correlated Approach to the Normal State of Strontium Ruthenate
• A review of some new perspectives on the theory of superconducting Sr${}_2$RuO${}_4$
• Optical conductivity of superconducting Sr_2RuO_4
• Effects of deep superconducting gap minima and disorder on residual thermal transport in $\mathrm{S}{\mathrm{r}}_2\mathrm{Ru}{\mathrm{O}}_4$
• In-plane magnetic field phase diagram of superconducting Sr2RuO4
• Dipole Interaction in Triplet Superconductivity with Horizontal Line Nodes; Orientation of the Superconducting Order Parameter in Sr2RuO4
• Coherence peak in the spin susceptibility from nesting in spin-triplet superconductors; A probe for line nodes in Sr${}_2$RuO${}_4$
• Strain-induced superconductivity in Sr2IrO4
• Triplet pairing due to spin-orbit-assisted electron-phonon coupling
• Evening out the spin and charge parity to increase T${}_c$ in unconventional superconductor Sr_{2}RuO_{4}
• Two-gap superconductivity: interband interaction in the role of external field
• Ferromagnetism and triplet superconductivity in the two-dimensional Hubbard model
• Renormalization group approach to spinor Bose-Fermi mixtures in a shallow optical lattice
• Theory of Magnetic Fluctuations in Iron Pnictides
• Even odder after twenty-three years: the superconducting order parameter puzzle of Sr2RuO4
• Tunneling current in triplet f-wave superconductors with horizontal lines of nodes
• Possible anomalous Doppler shift effect in superconductor Sr${}_2$RuO${}_4$
• Ultrasonic attenuation in magnetic fields for superconducting states with line nodes in Sr2RuO4
• The study on penetration depth of anisotropic two-band s-wave superconductors by Ginzburg-Landau approach
• 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
• The role of transverse anisotropic elastic waves and Ehrenfest relationships in the superconducting state of the compound Sr${}_2$RuO${}_4$
• Universal crossover in surface superconductivity: Impact of varying Debye energy
• Non-magnetic tight binding disorder effects in the $\gamma$ sheet of $S{r}_{2}Ru{O}_4$