Evidence for Triplet Superconductivity in a Superconductor-Ferromagnet Spin Valve
Autor: | Leksin, P. V., Garif'yanov, N. N., Garifullin, I. A., Fominov, Ya. V., Schumann, J., Krupskaya, Y., Kataev, V., Schmidt, O. G., Büchner, B. |
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Rok vydání: | 2012 |
Předmět: | |
Zdroj: | Phys. Rev. Lett. 109, 057005 (2012) |
Druh dokumentu: | Working Paper |
DOI: | 10.1103/PhysRevLett.109.057005 |
Popis: | We have studied the dependence of the superconducting (SC) transition temperature on the mutual orientation of magnetizations of Fe1 and Fe2 layers in the spin valve system CoO_x/Fe1/Cu/Fe2/Pb. We find that this dependence is nonmonotonic when passing from the parallel to the antiparallel case and reveals a distinct minimum near the orthogonal configuration. The analysis of the data in the framework of the SC triplet spin valve theory gives direct evidence for the long-range triplet superconductivity arising due to noncollinearity of the two magnetizations. Comment: 5 pages (including 4 EPS figures). Version 2: final version as published in PRL |
Databáze: | arXiv |
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