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          <dc:title xml:lang="en">Data and code for "Quantifying Dynamic Tilting in Halide Perovskites: Chemical Trends and Local Correlations"</dc:title>
          <dc:creator>https://orcid.org/0000-0003-3395-1104</dc:creator>
          <dc:creator>https://orcid.org/0000-0001-5262-3339</dc:creator>
          <dc:creator>https://orcid.org/0000-0002-9231-6779</dc:creator>
          <dc:creator>https://orcid.org/0000-0002-2516-6061</dc:creator>
          <dc:subject xml:lang="en">Physical Sciences</dc:subject>
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          <dc:description xml:lang="en">This record contains data, scripts, and models associated with the publication  "Quantifying Dynamic Tilting in Halide Perovskites: Chemical Trends and Local Correlations".

Databases

The *.db files are databases with the results from density functional theory (DFT) calculations. These are sqlite databases in ase format, see here for more information. The demo-database-access.py script illustrates the most basic access.

Models

The neuroevolution potential (NEP) models described in the publication can be found in the nep-*.txt files. They can be used in conjunction with the GPUMD package. The calorine package provides a Python interface to GPUMD.

Primitive structures

Several primitive structures in extended xyz format can be found in the *.xyz files. These structures have been relaxed using the NEP models included here. The demo-for-using-structures-and-models.py script illustrates how to access the structures and models.

Tools for analyzing tilt angles

standardize-cell-orientation.pyConverts each frame in movie.xyz to the standardized cell setting and writes the resulting trajectory to movie-standardized.xyz. This is useful when working with triclinic cells.

analyze-tilt-angles-for-orthorhombic-cells.pyAnalyzes the distribution of tilt angles for each frame in a trajectory. The analysis assumes that the B-B bonds are oriented along the Cartesian coordinate system either without further rotation or after a "simple" rotation of the entire cell.

angle-analysis.ovitoOvito script that approximately implements the procedure used in analyze-tilt-angles-for-orthorhombic-cells.py.</dc:description>
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          <dc:publisher xml:lang="en">Chalmers University of Technology</dc:publisher>
          <dc:publisher xml:lang="sv">Chalmers tekniska högskola</dc:publisher>
          <dc:date>2025-05-31T00:00:00Z</dc:date>
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