Interface superconductivity in La1.48Nd0.4Sr0.12CuO4/La1.84Sr0.16CuO4 bilayers

Rout, P. K. and Budhani, R. C. (2010) Interface superconductivity in La1.48Nd0.4Sr0.12CuO4/La1.84Sr0.16CuO4 bilayers. Physical Review B , 82 (2). 024518-1-024518-5. ISSN 1098-0121

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Official URL: http://link.aps.org/doi/10.1103/PhysRevB.82.024518

Abstract

We identify a distinct superconducting phase at the interface of a La1.48Nd0.4Sr0.12CuO4/La1.84Sr0.16CuO4 epitaxial bilayer system using ac screening measurements. A model based on interdiffusion of quasiparticles and condensate at the interface yields a thickness of ∼25 nm for the interfacial layer. Two-dimensional superconductivity of the interface layer appears to be governed by Kosterlitz-Thouless-Berezinskii transition. A parallel magnetic field suppresses the superconducting transition temperature of this layer with a pair-breaking parameter α varying as H2.

Item Type:	Article
Subjects:	Physics
Divisions:	UNSPECIFIED
Depositing User:	Users 4 not found.
Date Deposited:	08 May 2012 11:04
Last Modified:	08 May 2012 11:04
URI:	http://npl.csircentral.net/id/eprint/206

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