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Issue 43, 2016
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Crossover between superconductivity and magnetism in SrRuO3 mesocrystal embedded YBa2Cu3O7−x heterostructures

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Abstract

The competition between superconductivity and ferromagnetism poses great challenges and has attracted renewed interest for applications in novel spintronic devices. In order to emphasize their interactions, we fabricated a heterostructure composed of superconducting YBa2Cu3O7−δ (YBCO) film embedded with itinerant ferromagnetic SrRuO3 (SRO) mesocrystals. Starting from a doping concentration of 10 vol% of SRO mesocrystal in a YBCO matrix, corresponding to the density of SRO nanocrystals ∼5 × 109 cm−2, which exhibits the typical characteristic of a metal–superconductor transition, and then increasing the magnetic interactions as a function of SRO embedment, the electronic correlation and the interplay between superconductivity and magnetism throughout the temperature regime were investigated. A metal–insulator transition in the normal state of YBCO and a crossover between superconductivity and magnetism at low temperatures were found upon increasing the density of nano-size SRO crystallites in the YBCO matrix as a consequence of competing interactions between these two ordered phases.

Graphical abstract: Crossover between superconductivity and magnetism in SrRuO3 mesocrystal embedded YBa2Cu3O7−x heterostructures

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Publication details

The article was received on 02 Jul 2016, accepted on 14 Oct 2016 and first published on 18 Oct 2016


Article type: Paper
DOI: 10.1039/C6NR05262B
Citation: Nanoscale, 2016,8, 18454-18460
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    Crossover between superconductivity and magnetism in SrRuO3 mesocrystal embedded YBa2Cu3O7−x heterostructures

    V. Suresh, J. Lin, H. Liu, Z. Zhang, P. Chiang, Y. Hsun, Y. Chen, J. Lin and Y. Chu, Nanoscale, 2016, 8, 18454
    DOI: 10.1039/C6NR05262B

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