• DOI:10.1103/PhysRevB.105.214512
• Corpus ID: 247223066

Theory of proximity effect in $s+p$-wave superconductor junctions

@inproceedings{Tanaka2022TheoryOP,
  title={Theory of proximity effect in \$s+p\$-wave superconductor junctions},
  author={Yukio Tanaka and T. H. Kokkeler and Alexander. A. Golubov},
  year={2022}
}

• Y. Tanaka, T. Kokkeler, A. Golubov
• Published 3 March 2022
• Physics

We derive a boundary condition for the Nambu Keldysh Green’s function in diffusive normal metal / unconventional superconductor junctions applicable for mixed parity pairing. Applying this theory to a 1d model of s + p -wave superconductor, we calculate LDOS in DN and charge conductance of DN / s + p -wave superconductor junctions. When the s -wave component of the pair potential is dominant, LDOS has a gap like structure at zero energy and the dominant pairing in DN is even-frequency spin-singlet s -wave. On the other hand, when the p -wave component is dominant, the resulting LDOS has a zero energy peak and the dominant pairing in DN is odd-frequency spin-triplet s -wave. We show the robustness of the quantization of the conductance when the magnitude of p -wave component of the pair potential is larger than that of s -wave one. These results show the robustness of the anomalous proximity effect specific to spin-triplet superconductor junctions.