Electrolyte-gate-induced perovskite to brownmillerite transformations in La1-xSrxCoO3-d (LSCO) has been shown to be a facile technique to toggle between disparate electronic and magnetic phases in a single perovskite oxide thin film. Here we study the doping (Sr concentration), and strain (epitaxially imparted from the substrate) dependence of this topotactic transformation in LSCO thin films across almost the entire phase diagram. This repository page serves as a place to store the Figure plots and raw data from the cited publication.
The attached files and data sets represent the actual published Figures (in .tif format) and the corresponding x,y data pulled from each plot in the Figures (in .xlsx format). The data includes electronic transport data from in situ ion-gel-gating experiments, specular synchrotron x-ray diffraction (SXRD) data from operando gating experiments (Argonne National Lab), and summarized parameters extracted from each. Significantly, threshold voltage vs. Sr doping, extracted from electronic transport and SXRD for films on different substrates (different strain states, compressive vs tensile) and average Co valence vs. gate voltage, extracted from low temperature transport and magnetometry data, and single crystal literature values (see main text for full descriptions)
Sponsorship: This work was supported primarily by the National Science Foundation through the University of Minnesota MRSEC under award number DMR-2011401. Parts of this work were performed in the Characterization Facility, UMN, which receives partial support from NSF through the MRSEC and NNCI programs. Portions of this work were also conducted in the Minnesota Nano Center, which is supported by NSF through the National Nano Coordinated Infrastructure (NNCI) under ECCS-2025124. Part of this work also used resources of the Advanced Photon Source, a DOE Office of Science User Facility operated by Argonne National Laboratory under contract no. DE-AC02-06CH11357. W.T. acknowledges support from the Polish National Agency for Academic Exchange under the Polish Returns 2019 Program, grant no. PPN/PPO/2019/1/00014, and the subsidy of the Ministry of Science and Higher Education of Poland.