Kumar, Dushyant and Joshi, P. C and Hossain, Z and Budhani, R. C. (2013) Spin polarized carrier injection from full Heusler alloy Co2MnSi into superconducting NbN. Applied Physics Letters, 102 ( 11240). ISSN 0003-6951

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Abstract

The spin-polarized current injection (SPCI) experiments, where the spin-polarized current (I-S) is injected into a 25 mu m wide superconducting NbN bridge from a ferromagnetic Co2MnSi layer by tunneling through MgO barrier, show a large (approximate to 67%) suppression of superconducting critical current (I-C) due to I-S injection at T/T-C approximate to 0.4. This corresponds to a large dynamic gain of approximate to 36 at 3K, 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 I-C 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
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	19 Aug 2026 10:01
Last Modified:	19 Aug 2026 10:01
URI:	https://npl.csircentral.net/id/eprint/3053

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