Mimicking superconductivity of Sr2RuO4 using SrRuO3-SrTiO3 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