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)

*Supported by U.S.NSF under Grant No. DMR1608865

–

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