Crossover between superconductivity and magnetism in SrRuO3 mesocrystal embedded YBa2Cu3O7-: X heterostructures

Vandrangi Suresh, Jheng Cyuan Lin, Heng Jui Liu, Zaoli Zhang, Ping Chih Chiang, Yu Ching Hsun, Yi Chun Chen, Jiunn Yuan Lin, Ying Hao Chu

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)18454-18460
Number of pages7
JournalNanoscale
Volume8
Issue number43
DOIs
Publication statusPublished - 2016 Nov 21

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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