Dataset: Atomic-scale tracking of topological defect motion and incommensurate charge order melting

Authors: Noah Schnitzer ¹, Berit H. Goodge ², Gregory Powers ², Jaewook Kim ³, Sang-Wook Cheong ⁴, Ismail El Baggari ⁵, Lena F. Kourkoutis ^2,6

Author affiliations:
¹:Department of Materials Science and Engineering, Cornell University, Ithaca, NY, 14853 USA
²:Department of Applied and Engineering Physics, Cornell University, Ithaca, NY, 14853 USA
³:Korea Atomic Energy Research Institute: Daejeon, South Korea
⁴:Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854 USA
⁵:Rowland Institute at Harvard University, Cambridge, MA 02138 USA
⁶:Kavli Institute at Cornell for Nanoscale Science, Ithaca, NY, 14853 USA
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Atomic resolution high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and selected area electron diffraction (SAED) datasets acquired on a single crystal of the charge ordered manganite (Bi,Sr,Ca)MnO3. These datasets are acquired at variable cryogenic temperatures, revealing the melting of charge order and motion of topological defects in the material through tracking the same fields of view across temperature steps. All STEM data are rapidly acquired image stacks which were registered and averaged in post processing, only the final averaged images are included here. The HAADF image series are sets of these registered images acquired sequentially at through temperature cycles, the temperature of each image in the series can be found in the Datasets_temperatures.csv file. The aligned_HAADF_series files were additionally carefully aligned to show precisely the same field of view through the full temperature cycle, allowing the motion of topological defects and nature of local order and disorder to be tracked.