Gupta, , Anurag and Singh, Gyanendra and Kumar, Dushyant and Kishan, Hari and Budhani, R. C. (2013) Giant coercivity enhancement and dimensional crossover of superconductivity in Co2FeSi-NbN nanoscale bilayers. Applied Physics Letters, 103 (18). 182602-1826007. ISSN 0003-6951

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Abstract

Proximity coupling and magnetic switching dynamics are shown to be correlated in bilayers of fully spin polarized ferromagnet (F) Co2FeSi and superconductor (S) NbN. The upper critical field derived from resistivity measurements shows a dimensional crossover with a reduced effective thickness of the S layer. At temperatures (T) << superconducting T-c, the measured M-H loops show two step switching: one at T- independent value similar to 7Oe and other at strongly T- dependent value becoming very large similar to 1 kOe at 2K. These results reveal induced ferromagnetism in S-layer at the S/F interface with vortex pinning influenced dynamics

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 09:49
Last Modified:	19 Aug 2026 09:49
URI:	https://npl.csircentral.net/id/eprint/3213

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