Edge states and determination of pairing symmetry in superconducting Sr2RuO4

Abstract

We calculate the energy dispersion of the surface Andreev states and their contribution to tunneling conductance for the order parameters with horizontal and vertical lines of nodes proposed for superconducting Sr2RuO4. For vertical lines, we find double peaks in tunneling spectra reflecting the van Hove singularities in the density of surface states originating from the turning points in their energy dispersion. For horizontal lines, we find a single cusp-like peak at zero bias, which agrees very well with the experimental data on tunneling in Sr2RuO4.

6 pages, 6 figures. V.2: comparison with experiment added and discussion of horizontal nodes expanded. v.3: significant expansion: 1 figure and 2 pages added. v.4: acknowledgements added. Additional viewgraphs with experimental and theoretical curves superimposed are available at http://www2.physics.umd.edu/~yakovenk/talks/Sr2RuO4/

References in corpus (6)

• Superconducting Gap Structure of Spin-Triplet Superconductor Sr_2RuO_4 Studied by Thermal Conductivity
• Interband proximity effect and nodes of superconducting gap in Sr2RuO4
• Ultrasound Attenuation in Sr${}_2$RuO${}_4$: an Angle-Resolved Study of the Superconducting Gap Function
• Observation of Andreev Surface Bound States in the 3-K phase Region of Sr_2RuO_4
• Anisotropy of magnetothermal conductivity in Sr2RuO4
• Phenomenological theory of the 3 Kelvin phase in Sr2RuO4

Cited by in corpus (24)

• Fractional ac Josephson effect in p- and d-wave superconductors
• Edge states of Sr${}_2$RuO${}_4$ detected by in-plane tunneling spectroscopy
• Symmetry-Protected Majorana Fermions in Topological Crystalline Superconductors: Theory and Application to Sr2RuO4
• Phase-sensitive tests of the pairing state symmetry in Sr2RuO4
• Evidence for Helical Hinge Zero Modes in an Fe-Based Superconductor
• Gauge-invariant electromagnetic response of a chiral px+ipy superconductor
• Impurity and interface bound states in $d_{x^2-y^2}+i{d}_{xy}$ and $p_x+i{p}_y$ superconductors
• Microscopic theory of tunneling spectroscopy in Sr${}_2$RuO${}_4$
• Theory of the high-frequency chiral optical response in a p_x+ip_y superconductor
• Anomalous surface states at interfaces in p-wave superconductors
• Spontaneous spin accumulation in singlet-triplet Josephson junctions
• Tunneling spectroscopy of topological superconductors
• Charge and spin supercurrents in triplet superconductor--ferromagnet--singlet superconductor Josephson junctions
• Transport across a junction of topological insulators and a superconductor
• Spin-Hall effect in triplet chiral superconductors and graphene
• Hot Spots and Transition from d-Wave to Another Pairing Symmetry in the Electron-Doped Cuprate Superconductors
• How to detect edge electron states in (TMTSF)2X and Sr2RuO4 experimentally
• Vortex Structures in Model p-Wave Superconducting Sr2RuO4 -- Single 2-Dimensional Band v.s. Quasi-1-Dimensional Band
• Josephson effect in a multi-orbital model for Sr${}_2$RuO${}_4$
• Low temperature electronic properties of Sr_2RuO_4 II: Superconductivity
• Identification of Spin-Triplet Superconductivity through a Helical-Chiral Phase Transition in Sr${}_2$RuO${}_4$ Thin-Films
• Tunneling conductance in superconducting junctions with $p$-wave unconventional magnets breaking time-reversal symmetry
• Transport across a system with three p-wave superconducting wires: effects of Majorana modes and interactions
• Penetration of nonquantized magnetic flux through a domain-wall bend in time-reversal symmetry broken superconductors