Evidence for Triplet Superconductivity in a Superconductor-Ferromagnet Spin Valve

B. B\"uchner; I. A. Garifullin; J. Schumann; N. N. Garif'yanov; O. G. Schmidt; P. V. Leksin; V. Kataev; Ya. V. Fominov; Y. Krupskaya

arxiv: 1207.0727 · v2 · pith:ESGENVQ3new · submitted 2012-07-03 · ❄️ cond-mat.supr-con · cond-mat.mes-hall

Evidence for Triplet Superconductivity in a Superconductor-Ferromagnet Spin Valve

P. V. Leksin , N. N. Garif'yanov , I. A. Garifullin , Ya. V. Fominov , J. Schumann , Y. Krupskaya , V. Kataev , O. G. Schmidt

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B. B\"uchner

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classification ❄️ cond-mat.supr-con cond-mat.mes-hall

keywords spintripletvalvedependenceevidencemagnetizationssuperconductivityanalysis

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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.

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Evidence for Triplet Superconductivity in a Superconductor-Ferromagnet Spin Valve

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