Probing the degree of spin polarization of a ferromagnet with ferromagnet/superconductor proximity effect

Pavel V. Leksin; Andrey A. Kamashev; Joachim Schumann; Vladislav Kataev; Jürgen Thomas; Thomas Gemming; Bernd Büchner; Ilgiz A. Garifullin

arXiv · 1703.08422

Probing the degree of spin polarization of a ferromagnet with ferromagnet/superconductor proximity effect

Pavel V. Leksin·Andrey A. Kamashev·Joachim Schumann·Vladislav Kataev·Jürgen Thomas·Thomas Gemming·Bernd Büchner·Ilgiz A. Garifullin

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Abstract

Superconductor/ferromagnet proximity effect has been studied for Pb/Co$_2$Cr$_{1-x}$Fe$_x$Al bilayers. Different substrate temperatures allowed us to prepare the Heusler alloy Co$_2$Cr$_{1-x}$Fe$_x$Al films with different degree of spin polarization of conduction band of the Heusler layer. We obtain a strong correlation between the dependence of the superconducting transition temperature on the Pb-layer thickness at fixed thickness of the Heusler layer and the degree of spin polarization in the ferromagnetic layer.

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Pavel V. Leksin, Andrey A. Kamashev, Joachim Schumann, Vladislav Kataev, Jürgen Thomas, Thomas Gemming, Bernd Büchner, Ilgiz A. Garifullin. 2017-03-24. Probing the degree of spin polarization of a ferromagnet with ferromagnet/superconductor proximity effect. https://arxiv.org/abs/1703.08422

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