Mimicking superconductivity of Sr<sub>2</sub>RuO<sub>4</sub> using SrRuO<sub>3</sub>-SrTiO<sub>3</sub> superlattice

ORAL

Abstract

The putative chiral spin-triplet superconductivity in ruthenate is under intense controversy, where the various theoretical and experimental studies discuss the diverse alternative pairing symmetries. Currently, the investigation is solely focused on only one material, Sr2RuO4, and the field suffers from the lack of comparison target. Here, employing density functional theory-based analysis, we show that the heterostructure composed of SrRuO3 and SrTiO3 is inherent with all the key characteristics of Sr2RuO4, and eventually can host superconductivity. Furthermore, we show that the competing magnetic phases and associated frustration entangled with the superconducting state can be tuned by epitaxial strain engineering. This system offers an excellent platform for the study of
superconductivity of the ruthenate system.

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Presenters

  • Bongjae Kim

    • Kunsan National University
    • Department of Physics, Kunsan National University, Gunsan 54150, Korea
    • Department of Physics, Kunsan National University
    • Physics, Kunsan National University

Authors

  • Bongjae Kim

    • Kunsan National University
    • Department of Physics, Kunsan National University, Gunsan 54150, Korea
    • Department of Physics, Kunsan National University
    • Physics, Kunsan National University

  • Sergii Khmelevskyi

    • Institute for Applied Physics, Vienna University of Technology

  • Cesare Franchini

    • Faculty of Physics and Center for Computational Materials Science, University of Vienna
    • Faculty of Physics and Center for Computational Materials Sciences, Vienna university

  • Igor Mazin

    • Naval Research Laboratory
    • Department of Physics and Astronomy, George Mason University
    • Naval Research Laboratory (currently at George Mason University)

  • Kyoo Kim

    • Max Planck POSTECH/Korea Research Initiative
    • Pohang Univ of Sci & Tech