Proximity effect with noncentrosymmetric superconductors

Abstract

We describe the superconducting proximity effect taking place in a contact between a noncentrosymmetric superconductor and a diffusive normal/ferromagnetic metal within the quasiclassical theory of superconductivity. By solving numerically the Usadel equation with boundary conditions valid for arbitrary interface transparency, we show that the analysis of the proximity-modified local density of states in the normal side can be used to obtain information about the exotic superconductivity of noncentrosymmetric materials. We point out the signatures of triplet pairing, the coexistence of triplet and singlet pairing, and particular orbital symmetries of the pair potential. Exploiting the directional dependence of the spin polarization pair breaking effect on the triplet correlations, we show how the order relation between triplet and singlet gaps can be discriminated and that an estimation of the specific gap ratio is possible in some cases.

11 pages, 4 figures

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• Singlet and triplet Cooper pair splitting in hybrid superconducting nanowires
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• Generation of pure superconducting spin current in magnetic heterostructures via non-locally induced magnetism due to Landau Fermi-liquid effects
• Magnetoelectric Andreev effect due to proximity-induced non-unitary triplet superconductivity in helical metals
• Transport signatures of superconducting hybrids with mixed singlet and chiral triplet states
• Robustness of Spin-Triplet Pairing and Singlet-Triplet Pairing Crossover in Superconductor/Ferromagnet Hybrids
• Charge and spin supercurrents in triplet superconductor--ferromagnet--singlet superconductor Josephson junctions
• Interface currents in topological superconductor-ferromagnet heterostructures
• Electric control of superconducting transition through a spin-orbit coupled interface
• Bulk odd-frequency pairing in the superconducting Su-Schrieffer-Heeger model
• Theory of proximity effect in two-dimensional unconventional superconductor with Rashba spin-orbit interaction
• The quasiclassical theory for interfaces with spin--orbit coupling
• Effects of spin orbit coupling in superconducting proximity devices -- application to $\mathrm{CoS}{\mathrm{i}}_2/TiS{\mathrm{i}}_2$ heterostructures
• Theory of proximity effect in $s+p$-wave superconductor junctions
• Fulde-Ferrell-Larkin-Ovchinnikov state in spin-orbit-coupled superconductors
• Electronic conduction and superconducting properties of CoSi${}_2$ films on silicon--an unconventional superconductor with technological potential
• Spin current injection via equal-spin Cooper pairs in ferromagnet/superconductor heterostructures
• Magnetic anisotropy of superconducting transition in S/AF heterostructures with spin-orbit coupling
• Proximity effect of time-reversal symmetry broken non-centrosymmetric superconductors
• Spin conductance in SNN junctions with non-centrosymmetric superconductors
• Controllable enhancement of $p$-wave superconductivity via magnetic coupling to a conventional superconductor
• Enhanced controllable triplet proximity effect in superconducting spin-orbit coupled spin valves with modified superconductor/ferromagnet interfaces
• Neel proximity effect in superconductor/antiferromagnet heterostructures
• Anisotropic differential conductance of a mixed parity superconductor/ferromagnet structure