Properties of Josephson junctions involving the cos(kx)⋅cos(ky) pairing state in iron pnictides
Wei-Feng Tsai, Dao-Xin Yao, B. Andrei Bernevig, JiangPing Hu
DOI 10.1103/PhysRevB.80.012511 · Physical Review B
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Abstract
We propose a trilayer π-junction that takes advantage of the unconventional sx2y2=cos kx cos ky pairing symmetry which changes sign between electron and hole Fermi pockets in the iron pnictides. In addition, we also present theoretical results for Andreev bound states in thin superconductor-normal metal (or insulator) iron-pnictide junctions. The presence of nontrivial in-gap states, which uniquely appear in this unconventional pairing state, is a distinct feature in comparison to other singlet pairing states.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| MgB2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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