Proximity Effect in Superconducting-Ferromagnetic Granular Structures
| Autor: | Greener, Hadar, Shelukhin, Victor, Karpovski, Michael, Goldstein, Moshe, Palevski, Alexander |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Phys. Rev. B 97, 014520 (2018) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.97.014520 |
| Popis: | We examined the proximity effect in granular films made of Pb, a superconductor, and Ni, a ferromagnet, with various compositions. Slow decay of the critical temperature as a function of the relative volume concentration of Ni per sample was demonstrated by our measurements, followed by a saturation of T$_c$. Using an approximate theoretical description of our granular system in terms of a layered one, we show that our data can only be reasonably fitted by a multilayer model. This indicates the importance of the interplay between different ferromagnetic grains; when non-collinearly magnetized they should lead to triplet Cooper pairing. Comment: 8 pages, 7 figures |
| Databáze: | arXiv |
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