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Superconducting Spin-Valve Effect in Structures with a Ferromagnetic Heusler Alloy Layer
Journal of Experimental and Theoretical Physics ( IF 1.0 ) Pub Date : 2020-09-22 , DOI: 10.1134/s1063776120060126
A. A. Kamashev , N. N. Garif’yanov , A. A. Validov , Ya. V. Fominov , I. A. Garifullin

Abstract

We present comparative analysis of superconducting properties of two types of spin valves containing Heusler alloy Co2Cr1 – xFexAly as one of ferromagnetic layers (F1 or F2) in the F1/F2/S structures. We have used the Heusler alloy layer (i) as a weak ferromagnet in the case of the F2 layer and (ii) as a half-metal in the case of F1 layer. In the former case, large classical effect ΔTc of the superconducting spin valve is obtained; this is facilitated by a substantial triplet contribution Δ\(T_{c}^{{{\text{trip}}}}\) to the superconducting spin valve effect. In the latter case, giant value of Δ\(T_{c}^{{{\text{trip}}}}\) reaching 0.5 K is observed.



中文翻译:

具有铁磁Heusler合金层的结构中的超导自旋阀效应

摘要

我们对两种类型的自旋阀的超导性能进行比较分析,这些自旋阀包含Heusler合金Co 2 Cr 1 – x Fe x Al y作为F1 / F2 / S结构中的铁磁层之一(F1或F2)。在F2层的情况下,我们将Heusler合金层(i)用作弱铁磁体,在F1层的情况下将(ii)用作半金属。在前一种情况下,可获得超导自旋阀的大经典效应ΔT c;这由超导自旋阀效应的三重态贡献Δ \(T_ {c} ^ {{{\ text {trip}}}} \)促进。在后一种情况下,Δ \(T_ {c} ^ {{{\ text {trip}}}}} \)的巨值 达到0.5K。

更新日期:2020-09-23
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