0−π phase shifts in Josephson junctions as a signature for the s±-wave pairing state
Jacob Linder, Iver B. Sperstad, Asle Sudbø
DOI 10.1103/PhysRevB.80.020503 · Physical Review B
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Abstract
We investigate Josephson junctions with superconducting ferropnictides, both in the diffusive and ballistic limit. We focus on the proposed s±-wave state and find that the relative phase shift intrinsic to the s±-wave state may provide 0−π oscillations in the Josephson current. This feature can be used to discriminate this pairing state from the conventional s-wave symmetry. The 0−π oscillations appear both as a function of the ratio of the interface resistances for each band and, more importantly, as a function of temperature, which greatly aids in their detection.
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 |
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