Order-parameter symmetry manifestation in Josephson junctions
L. Dobrosavljević-Grujić, R. Zikic
DOI 10.1103/PhysRevB.68.092502 · Physical Review B
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Abstract
Density of states (DOS) and supercurrents in clean anisotropic superconductor/normal metal/anisotropic superconductor Josephson junctions (weak links with transparent interfaces) are studied theoretically. Two types of anisotropic order parameter are considered: d wave with dx2−y2 symmetry and extended s wave with eight nodes (s* wave). It is shown that in both cases Andreev bound zero-energy state can appear in the equilibrium state of the junction, and typical differences between d-wave and s*-wave DOS are presented. Another way to distinguish between the two types of symmetry is found in different anisotropic behavior of the critical current. Possible application to experiments is briefly discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O7 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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