Josephson Effect in Noncentrosymmetric Superconductor Junctions

Abstract

We discuss the Josephson current between two noncentrosymmetric superconductors. The coexistence of superconducting order parameters between spin-singlet ${\Delta }_{\text{S}}$ and helical p-wave spin-triplet ${\Delta }_{\text{T}}$ enriches a variety of low-temperature behavior of Josephson current depending on their relative amplitudes. We will show that characteristic behaviors of the Josephson current for ${\Delta }_{\text{S}}>{\Delta }_{\text{T}}$ are clearly different from those for ${\Delta }_{\text{S}}<{\Delta }_{\text{T}}$. The topologically protected zero-energy surface bound states are responsible for the clear difference. We conclude that the Josephson current well reflects character of the topological surface states and the pairing symmetry of noncentrosymmetric superconductors.

7 pages, 6 figures embedded

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Cited by in corpus (11)

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• Types of topological surface states in nodal noncentrosymmetric superconductors
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• Transport signatures of superconducting hybrids with mixed singlet and chiral triplet states
• Josephson Effect and Triplet--Singlet Ratio of Non--centrosymmetric Superconductors
• Orbital tunable 0-$\pi$ transitions in Josephson junctions with noncentrosymmetric topological superconductors
• Josephson response of a conventional and a noncentrosymmetric superconductor coupled via a double quantum dot
• Josephson effect in silicene-based SNS Josephson junction: Andreev reflection and free energy
• Proximity effect of time-reversal symmetry broken non-centrosymmetric superconductors
• Magnetic resonance in a singlet-triplet Josephson junction
• Bulk-boundary correspondence in Josephson Junctions