Cryogenic FSF spin-valves with long-range triplet superconducting correlationsтезисы доклада

Работа с тезисами доклада


[1] Cryogenic fsf spin-valves with long-range triplet superconducting correlations / N. Pugach, M. Eschrig, M. G. Flokstra et al. // 12th European Conference on Applied Superconductivity, EUCAS 2015: Scientific Program. — Lyon, France, 2015. We have calculated and observed the angular dependence of the Tc for FSF as well as SFF Co-Nb spin-valves. For both sample types (SFF and FSF) a large suppression of Tc is found when the magnetizations are orthogonal, consistent with the theoretical expectations for the drainage of singlet into the triplet LRTC channel when the magnetization is non-collinear. This suppression may be controlled by the magnitude of the applied field. The effect almost disappears when switching the spin-valve into a collinear state, when LRTC are absent. This shows that LRTC in the ferromagnetic regions are a crucial ingredient contributing to the effect. Such spin-valves may serve as building blocks of spintronic devices and our investigation provide a mechanism by which such devices might be realized.

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