2023/09/15 by Marco Krummenacher, Moritz Gubler, Krummenacher, Marco +9 · 2 citations
Chemical Engineering · Materials Science · Physics and Astronomy · #Advanced Chemical Physics Studies #Catalysis and Oxidation Reactions #Computational Physics (physics.comp-ph) #FOS: Physical sciences #Machine Learning in Materials Science
paper · pdf · doi:10.48550/arxiv.2309.08418
openalex publication_date 2023/09/15 · openalex created_date 2023/09/20 · openalex updated_date 2026/07/28
In the dynamic field of materials science, the quest to find optimal structures with low potential energy is of great significance. Over the past two decades, the minima hopping algorithm has emerged as a successful tool in this pursuit. We present a robust, user friendly and efficient implementation of the minima hopping algorithm as a Python library, enhancing in this way the global structure optimization simulations significantly. Our implementation significantly accelerates the exploration the potential energy surfaces, leveraging an MPI parallelization scheme that allows for multi level parallelization. In this scheme, multiple minima hopping processes are running simultaneously communicating their findings to a single database and, therefore, sharing information with each other about which parts of the potential energy surface have already been explored. Also multiple features from several existing implementations such as variable cell shape molecular dynamics and combined atomic position and cell geometry optimization for bulk systems, enhanced temperature feedback and fragmentation fixing for clusters are included in this implementation. Finally, this implementation takes advantage of the Atomic Simulation Environment (ASE) Python library allowing for high flexibility regarding the underlying energy and force evaluation.