Electronic Excitations of Strained LaCoO<sub>3</sub> Thin Films Investigated by Resonant Inelastic X-ray Scattering

ORAL

Abstract

The spin-state transition of perovskite LaCoO3 is an interest and important subject, which has received much attention for decades. Here we present measurements of high-resolution resonant inelastic X-ray scattering (RIXS) at Co L-edge on LaCoO3 thin films grown on LSAT substrates of various orientations, including (110) and (111), by pulse laser deposition. The change in the magnetic transition of LaCoO3 thin films shows that magnetic structure is sensitive to tensile-strain. We will present RIXS results to discuss the change of dd excitations and related elementary electronic excitations in response to different tensile-strain in the thin films. Our data provide an effective method to quantify the ratio of high-spin and and low-spin states in the thin films.

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Presenters

  • Ting-Chun Huang

    • Department of Electrophysics, National Chiao Tung University

Authors

  • Ting-Chun Huang

    • Department of Electrophysics, National Chiao Tung University

  • Hsiao-Yu Huang

    • Natl Synchrotron Rad Res Ctr
    • National Synchrotron Radiation Research Center

  • Amol Singh

    • National Synchrotron Radiation Research Center

  • Jun Okamoto

    • Natl Synchrotron Rad Res Ctr
    • National Synchrotron Radiation Research Center

  • Ashish Chainani

    • Natl Synchrotron Rad Res Ctr
    • National Synchrotron Radiation Research Center

  • Ying-Hao Chu

    • Department of Materials Science and Engineering, National Chiao Tung University
    • National Chiao Tung University

  • C. Chen

    • Natl Synchrotron Rad Res Ctr
    • National Synchrotron Radiation Research Center

  • Di-Jing Huang

    • Natl Synchrotron Rad Res Ctr
    • National Synchrotron Radiation Research Center