Kumar, Dushyant and Joshi, P. C. and Hossain, Z. and Budhani, R. C. (2013) Spin polarized carrier injection from full Heusler alloy Co2MnSi into superconduting NbN. Applied Physics Letters, 103. ISSN 0003-6951

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The spin-polarized current injection (SPCI) experiments, where the spin-polarized current (IS) is injected into a 25 μm wide superconducting NbN bridge from a ferromagnetic Co2MnSi layer by tunneling through MgO barrier, show a large (≈67%) suppression of superconducting critical current (IC) due to IS injection at T/TC ≈ 0.4. This corresponds to a large dynamic gain of ≈36 at 3 K, which is 40 times higher than the gain at 6.5 K. Such a rapid rise of gain at lower temperatures strongly suggests a dominant role of SPCI in IC suppression as compared to the effect of Joule-heating.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s American Institute of Physics.
Subjects: Applied Physics/Condensed Matter
Depositing User: Users 27 not found.
Date Deposited: 19 Jun 2020 10:55
Last Modified: 19 Jun 2020 10:55
URI: http://npl.csircentral.net/id/eprint/3069

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