Signature of odd-frequency equal-spin triplet pairing in the Josephson current on the surface of Weyl nodal loop semimetals
Paramita Dutta, Annica M. Black-Schaffer
DOI 10.1103/PhysRevB.100.104511 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We theoretically predict proximity-induced odd-frequency (odd−ω) pairing on the surface of a Weyl nodal loop semimetal, characterized by a nodal loop Fermi surface and drumheadlike surface states (DSSs), attached to conventional spin-singlet s-wave superconducting leads. Due to the complete spin polarization of the DSS, only odd−ω equal-spin triplet pairing is present, and we show that it gives rise to a finite Josephson current. Placing an additional ferromagnet in the junction can also generate odd−ω mixed-spin triplet pairing, but the pairing and current are not affected if the magnetization is orthogonal to the DSS spin polarization, which further confirms the equal-spin structure of the pairing.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| PbTaSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| SrIrO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| TITaSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| HgCr2Se4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Ca3P2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Large Josephson current in Weyl nodal loop semimetals due to odd-frequency superconductivity
similarity 0.93Fariborz Parhizgar & Annica M. Black-Schaffer · 2018 · arXiv:1810.09687
Source status unknown — claims are unverified
Signature of odd-frequency equal-spin triplet pairing in the Josephson current on the surface of Weyl nodal loop semimetals
similarity 0.92Paramita Dutta & Annica M. Black-Schaffer · 2019 · arXiv:1902.10014
Source status unknown — claims are unverified
Signatures of odd-frequency pairing in the Josephson junction current noise
similarity 0.92Rubén Seoane Souto et al.
Source status unknown — claims are unverified
Mixed pairing symmetries and flux-induced spin current in mesoscopic superconducting loops with spin correlations
similarity 0.90Guo-Qiao Zha et al.
Source status unknown — claims are unverified
Anomalous Josephson Effect between Even- and Odd-Frequency Superconductors
similarity 0.90Yukio Tanaka et al.
Source status unknown — claims are unverified
Field-free Josephson diode effect in a d-wave superconductor heterostructure
similarity 0.89Hamed Vakili et al.
Source status unknown — claims are unverified