Layer-sequence dependence of transport and superconducting properties of Nb∕Pd bilayers
A. Potenza, M. S. Gabureac, C. H. Marrows
DOI 10.1103/PhysRevB.76.014534 · Physical Review B
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Abstract
We have studied the superconducting properties of sputtered bilayer thin films of Nb and Pd. The superconducting proximity effect suppresses the critical temperature TC of these bilayer systems. Here, we report that this suppression shows a marked layer-sequence dependence: the suppression is larger for a Nb layer capped with Pd rather than buffered by it. We interpret our data in terms of a theoretical model of the proximity effect that takes into account finite interface transparency, and explain this effect as arising due to different levels of disorder in the Pd layer. We believe the same proximity induced effect could also appear in other studies and will also affect ferromagnet/superconductor/ferromagnet structures.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5 | Pressure not reported | midpoint |
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