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Exploring a potential energy surface by machine learning for characterizing atomic transport

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 نشر من قبل Kazuaki Toyoura
 تاريخ النشر 2017
  مجال البحث فيزياء
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We propose a machine-learning method for evaluating the potential barrier governing atomic transport based on the preferential selection of dominant points for the atomic transport. The proposed method generates numerous random samples of the entire potential energy surface (PES) from a probabilistic Gaussian process model of the PES, which enables defining the likelihood of the dominant points. The robustness and efficiency of the method are demonstrated on a dozen model cases for proton diffusion in oxides, in comparison with a conventional nudge elastic band method.

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