Josephson current between chiral superconductors

Abstract

We study chiral interface Andreev bound states and their influence on the Josephson current between clean superconductors. Possible examples are superconducting Sr2RuO4 and the B-phase of the heavy-fermion superconductor UPt3. We show that, under certain conditions, the low-energy chiral surface states enhance the critical current of symmetric tunnel junctions at low temperatures. The enhancement is substantially more pronounced in quantum point contacts. In classical junctions dispersive chiral states result in a logarithmic dependence of the critical current. This logarithmic behavior contains the temperature, the barrier transparency and the broadening of the bound states, and depends on the detailed relation between these parameters. The Josephson current through the domain wall doesn't acquire this logarithmic enhancement, although the contribution from the bound states is important in this case as well.

17 pages, 6 figures

References in corpus (7)

• The Order Parameter for the Superconducting Phases of UPt${}_3$
• Degenerate ground state in a mesoscopic YBaCuO grain boundary Josephson junction
• Ultrasound Attenuation in Sr${}_2$RuO${}_4$: an Angle-Resolved Study of the Superconducting Gap Function
• Anisotropy of magnetothermal conductivity in Sr2RuO4
• Transport and the Order Parameter of Superconducting Sr${}_2$RuO${}_4$
• Thermal Conductivity near H_c2 for spin-triplet superconducting States with line nodes in Sr_2RuO_4
• Mixed-Parity Superconductivity in Sr2RuO4

Cited by in corpus (28)

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• Josephson interferometer in a ring topology as a symmetry prove of Sr_2RuO_4
• Domain wall in a chiral p-wave superconductor: a pathway for electrical current
• Spin Josephson effect with a single superconductor
• Spontaneous spin current due to triplet superconductor--ferromagnet interfaces
• A Holographic Chiral p_x + ip_y Superconductor
• Geometric Induction in Chiral Superconductors
• Josephson Effect in Noncentrosymmetric Superconductor Junctions
• Co-appearance of superconductivity and ferromagnetism in a Ca${}_2$RuO${}_4$ nanofilm crystal
• Magnetic Intragap States and Mixed Parity Pairing at the Edge of Spin-Triplet Superconductors
• Spin polarized transport in the weak-link between $f$-wave superconductors
• Josephson effect in point contacts between ''f-wave'' superconductors
• Super-magnetoresistance effect in triplet spin valves
• Josephson effect in d-wave superconductor junctions in a lattice model
• Robustness of Gapless Interface State in a Junction of Two Topological Insulators
• Domain walls in chiral p-wave superconductors: Quasiparticle spectrum and dynamics
• Tunneling conductance and local density of states in time-reversal symmetry breaking superconductors under the influence of an external magnetic field
• Transport of Charge and Spin in the Weak Link between Misoriented $PrO{s}_{4}S{b}_{12}$ Superconductors
• Characterization of Sr2RuO4 Josephson junctions made of epitaxial films
• Transport Properties in Ferromagnetic Josephson Junction between Triplet Superconductors
• Thermomodulated intrinsic Josephson effect in Kagome CsV3Sb5
• Josephson effect in quasi one-dimensional unconventional superconductors
• Josephson effect in spin-singlet superconductor/ferromagnetic insulator/spin-triplet superconductor junctions with helical $p$-wave states
• Stationary Josephson effect in a weak-link between nonunitary triplet superconductors
• Bulk-boundary correspondence in Josephson Junctions
• Andreev bound states at boundaries of polarized 2D Fermi superfluids with s-wave pairing and spin-orbit coupling