Influence of the impurity scattering on charge transport in unconventional superconductor junctions

Abstract

We study the influence of non-magnetic impurity scatterings on the tunneling conductance of a junction consisting of a normal metal and a disordered unconventional superconductor by solving the quasiclassical Eilenberger equation self-consistently. We find that the impurity scatterings in both the Born and unitary limits affect the formation of the Andreev bound states and modify strongly the tunneling spectra around zero bias. Our results are interpreted well by the appearance of odd-frequency Cooper pairs near the interface and by the divergent behavior of the impurity self-energy. The present paper provides a useful tool to identify the pairing symmetry of unconventional superconductors in experiments.

arXiv comment9 pages, 10 figures, comments, suggestions about missing references, etc., are welcome

References in corpus (54)

• Topological Insulators
• Topological insulators and superconductors
• Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
• Classification of topological insulators and superconductors in three spatial dimensions
• Helical liquids and Majorana bound states in quantum wires
• New directions in the pursuit of Majorana fermions in solid state systems
• Topological insulators and superconductors: ten-fold way and dimensional hierarchy
• A generic new platform for topological quantum computation using semiconductor heterostructures
• Odd Triplet Superconductivity and Related Phenomena in Superconductor-Ferromagnet Structures
• Majorana fermions in a tunable semiconductor device
• Chiral superconductivity from repulsive interactions in doped graphene
• Three-Dimensional Topological Insulators
• Symmetry and Topology in Superconductors - Odd-frequency pairing and edge states -
• Evaluation of Spin-Triplet Superconductivity in Sr2RuO4
• Fermion zero modes on vortices in chiral superconductors
• Chiral P-Wave Order in Sr_2RuO_4
• Competing many-body instabilities and unconventional superconductivity in graphene
• Quasiparticle States near the Surface and the Domain Wall in a p_x\pm i p_y-Wave Superconductor
• Theory of the proximity effect in junctions with unconventional superconductors
• Topological odd-parity superconductors
• Functional renormalization group and variational Monte Carlo studies of the electronic instabilities in graphene near 1/4 doping
• Distribution functions in non-equilibrium theory of superconductivity and Andreev spectroscopy in unconventional superconductors
• Chiral d-wave superconductivity in doped graphene
• Symmetries of Pairing Correlations in Superconductor-Ferromagnet Nanostructures
• Odd-frequency pairing in normal metal/superconductor junctions
• Predictions for Impurity-Induced Tc Suppression in the High-Temperature Superconductors
• Spin-triplet superconductivity in Sr${}_2$RuO${}_4$ probed by Andreev reflection
• Singlet-triplet conversion and the long-range proximity effect in superconductor-ferromagnet structures with generic spin dependent fields
• Anomalous charge transport in mesoscopic triplet superconductor junctions
• Topological properties of spin-triplet superconductors and the Fermi surface topology in the normal state
• Edge states of Sr${}_2$RuO${}_4$ detected by in-plane tunneling spectroscopy
• Theory of tunneling spectroscopy in superconducting Sr2RuO4
• Theory of the spin-galvanic effect and the anomalous phase-shift ${\phi }_0$ in superconductors and Josephson junctions with intrinsic spin-orbit coupling
• Josephson currents through spin-active interfaces
• Circuit theory of unconventional superconductor junctions
• Theory of enhanced proximity effect by mid gap Andreev resonant state in diffusive normal metal / triplet superconductor junctions
• Surface bound states and spin currents in non-centrosymmetric superconductors
• Quasiclassical approach to the spin-Hall effect in the two-dimensional electron gas
• Temperature Dependence of the Superfluid Density in a Noncentrosymmetric Superconductor
• Identifying the pairing symmetry in the Sr2RuO4 superconductor
• Universal Heat Transport in Sr2RuO4
• Theory of tunneling conductance for normal metal/insulator/triplet superconductor junctions
• Nonequilibrium Superconductivity near Spin Active Interfaces
• Vanishing edge currents in non-$p$-wave topological chiral superconductors
• Orbital Angular Momentum and Spectral Flow in Two Dimensional Chiral Superfluids
• Broadening of Andreev-Bound States in d_{x^2-y^2} superconductors
• Surface electronic scattering in d-wave superconductors
• Anomalous Proximity Effect and Theoretical Design for its Realization
• Anomalous surface states at interfaces in p-wave superconductors
• Tunneling spectroscopy of topological superconductors
• Majorana fermions in s-wave noncentrosymmetric superconductor with Rashba and Dresselhaus (110) spin-orbit couplings
• Generalized Eilenberger theory for Majorana zero-mode-carrying disordered $p$-wave superconductors
• Influence of impurity scattering on tunneling conductance in normal metal- d -wave superconductor junctions
• Proximity Effect in Normal Metal - High Tc Superconductor Contacts

Cited by in corpus (24)

• Odd-frequency superconductivity
• Benefits of weak disorder in one dimensional topological superconductors
• Current fluctuations in unconventional superconductor junctions with impurity scattering
• Theory of proximity effect in two-dimensional unconventional superconductor with Rashba spin-orbit interaction
• Subgap states in two dimensional spectroscopy of unconventional superconductors using graphene
• Phase-tunable electron transport assisted by odd-frequency Cooper pairs in topological Josephson junctions
• Josephson effect in a multi-orbital model for Sr${}_2$RuO${}_4$
• Electron waiting times in hybrid junctions with topological superconductors
• Observability of surface currents in p-wave superconductors
• Stability of flat zero-energy states at the dirty surface of a nodal superconductor
• Thermoelectric detection of Andreev states in unconventional superconductors
• Controllable odd-frequency Cooper pairs in multi-superconductor Josephson junctions
• Spin-polarized multiple Andreev reflections in spin-split superconductors
• Local impedance on a rough surface of a chiral $p$-wave superconductor
• Effect of disorder on Majorana localization in topological superconductors: a quasiclassical approach
• Spectroscopic and optical response of odd-frequency superconductors
• Identifying Majorana bound states at quantum spin Hall edges using a metallic probe
• Quasiclassical circuit-theory of contiguous disordered multiband superconductors
• Impact of impurity scattering on odd-frequency spin-triplet pairing near the edge of the Kitaev chain
• Phase-tunable multiple Andreev reflections in a quantum spin Hall strip
• P-wave pairing near a spin-split Josephson junction
• Confinement-induced zero-bias peaks in conventional superconductor hybrids
• DC-current induced domain wall in a chiral $p$-wave superconductor
• Odd-frequency Pairing in Josephson Junctions Coupled by Magnetic Textures