Superconducting Spin-Valve Effect in Structures with a Ferromagnetic Heusler Alloy Layer
Autor: | A. A. Validov, I. A. Garifullin, N. N. Garif’yanov, Ya. V. Fominov, A. A. Kamashev |
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Rok vydání: | 2020 |
Předmět: |
Superconductivity
Materials science Condensed matter physics Solid-state physics Alloy Spin valve General Physics and Astronomy engineering.material 01 natural sciences Condensed Matter::Materials Science Ferromagnetism 0103 physical sciences engineering 010306 general physics Layer (electronics) Spin-½ |
Zdroj: | Journal of Experimental and Theoretical Physics. 131:311-321 |
ISSN: | 1090-6509 1063-7761 |
Popis: | 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. |
Databáze: | OpenAIRE |
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