Synthesis and Characterization of Iridate/Cuprate Heterostructures for Proximity Effect Studies

ORAL

Abstract

To study the proximity effect (PE) between a conductor with strong spin-orbit coupling and a d-wave superconductor, we synthesize thin-film heterostructures of a semimetallic iridate SrIr1-xO3-δ with YBa2Cu3O7-δ. Pulsed laser-ablated deposition is used for the epitaxial film growth, followed by post-annealing with a superoxygenation process [1]. The samples are structurally characterized using x-ray diffraction and reflectometry, as well as scanning transmission electron microscopy. Cryogenic electrical transport and scanning tunneling spectroscopy measurements are made to look for distinct evidence of novel PE in these iridate/cuprate heterostructures.

*Work supported by NSERC Discovery Grant, NSERC Alliance International Catalyst Quantum Grant, CFI-OIT, ORF-RI (infrastructure fund) and the Canadian Centre for Electron Microscopy.

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Publication: [1] H. Zhang et al., Phys. Rev. Mater. 2 (2018).

Presenters

  • Jacob S Lalande

    • University of Toronto

Authors

  • Jacob S Lalande

    • University of Toronto

  • Rainni K. Chen

    • University of Toronto

  • Charles C Zhang

    • University of Toronto

  • Joaquin E Reyes-Gonzalez

    • McMaster University

  • Maureen J Lagos

    • McMaster University

  • Young-June Kim

    • University of Toronto

  • John Y.T. Wei

    • University of Toronto