Supporting data for: Optical properties of electrochemically gated La1-xSrxCoO3-δ as a topotactic phase-change material

The data included here contain the information necessary to recreate the figures in a manuscript titled "Optical Properties of Electrochemically Gated La1-xSrxCoO3-δ as a Topotactic Phase-Change Material". The data files include scanning transmission electron microscopy (STEM) images of electrochemically gated La1-xSrxCoO3-δ (LSCO) films, finite-difference time-domain (FDTD)-simulated electric field and reflectance data for LSCO-based metasurfaces, transfer-matrix model reflectance data for LSCO films on gold substrates, complex refractive index data for LSCO films before and after electrochemical gating, electronic resistivity data for LSCO films before and after electrochemical gating, source-drain current measurements of LSCO films during electrochemical gating, and X-ray diffraction data for LSCO films before and after electrochemical gating.