Enhancement of superconductivity by decreased magnetic spin-flip scattering: Nonmonotonic TC dependence with enhanced magnetic ordering
M. Vélez, M. C. Cyrille, S. Kim, J. L. Vicent, Ivan K. Schuller
DOI 10.1103/PhysRevB.59.14659 · Physical Review B
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Abstract
Fe/Cu superlattices exhibit a structural and magnetic transition with increasing Fe layer thickness, thus increasing the Curie temperature. An enhancement in the superconducting transition temperature is found in proximity coupled Nb/[Fe/Cu] layers as the Fe thickness increases. These results indicate a weakening of the magnetic proximity effect for the material with higher Curie temperature, and suggest a dominant role of spin-flip scattering in the pair breaking processes which give rise to the proximity effect.
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. | 6.04 | Pressure not reported | unknown |
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