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Structure of SrRuO<sub>3</sub> films on SrTiO<sub>3</sub> (001) in the ultrathin limit

ORAL

Abstract

The observation of unconventional anomalous Hall effect in SrRuO3 films on SrTiO3 has been suggested as the signature for the existence of topologically non-trivial magnetic structures driven by Dzyaloshinskii – Moriya (DM) interaction [1,2]. However, experimental evidence for RuO6 distortion, which should be directly correlated with DM interaction, is far from clear. We have carried out a study on the evolution of lattice structure and its relation to the magneto-transport properties of SrRuO3 films with thickness in the ultra-thin limit (< 10 unit-cells) utilizing in-situ Low Energy Electron Diffraction, ex-situ High Resolution Scanning Transmission Electron Microscopy and transport measurements. We discuss the lattice distortion effect on the Dzyaloshinskii – Moriya interaction in the system.

1. L. Wang, et al., Nature Materials, 17, 1087 (2018)
2. W. Wang, et al., Nature Materials, 18, 1054 (2019)

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Presenters

  • Prahald Siwakoti

    Louisiana State University, Baton Rouge

Authors

  • Prahald Siwakoti

    Louisiana State University, Baton Rouge

  • Mohammad Saghayezhian

    Louisiana State University, Baton Rouge

  • Zhen Wang

    Louisiana State University, Baton Rouge, Louisiana State University

  • Yimei Zhu

    Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Brookhaven National Laboratory, Brookhaven National Lab, Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Department of Energy Science and Technology, Brookhaven National Laboratory

  • E Ward Plummer

    Louisiana State University, Baton Rouge, Department of Physics & Astronomy, Louisiana State University

  • Jiandi Zhang

    Louisiana State University, Baton Rouge