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Probing potential energy surface exploration strategies for complex systems
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N’Tsouaglo, Gawonou Kokou, Béland, Laurent Karim, Joly, Jean-François, Brommer, Peter, Mousseau, Normand and Pochet, Pascal (2015) Probing potential energy surface exploration strategies for complex systems. Journal of Chemical Theory and Computation, 11 (4). pp. 1970-1977. doi:10.1021/ct501032v
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Official URL: http://dx.doi.org/10.1021/ct501032v
Abstract
The efficiency of minimum-energy configuration searching algorithms is closely linked to the energy landscape structure of complex systems, yet these algorithms often include a number of steps of which the effect is not always clear. Decoupling these steps and their impacts can allow us to better understand both their role and the nature of complex energy landscape. Here, we consider a family of minimum-energy algorithms based, directly or indirectly, on the well-known Bell–Evans–Polanyi (BEP) principle. Comparing trajectories generated with BEP-based algorithms to kinetically correct off-lattice kinetic Monte Carlo schemes allow us to confirm that the BEP principle does not hold for complex systems since forward and reverse energy barriers are completely uncorrelated. As would be expected, following the lowest available energy barrier leads to rapid trapping. This is why BEP-based methods require also a direct handling of visited basins or barriers. Comparing the efficiency of these methods with a thermodynamical handling of low-energy barriers, we show that most of the efficiency of the BEP-like methods lie first and foremost in the basin management rather than in the BEP-like step.
| Item Type: | Journal Article | ||||
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| Subjects: | Q Science > QC Physics T Technology > TP Chemical technology |
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| Divisions: | Faculty of Science > Engineering | ||||
| Library of Congress Subject Headings (LCSH): | Power resources -- Research, Materials science, Algorithms | ||||
| Journal or Publication Title: | Journal of Chemical Theory and Computation | ||||
| ISSN: | 1549-9618 | ||||
| Official Date: | 3 March 2015 | ||||
| Dates: |
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| Volume: | 11 | ||||
| Number: | 4 | ||||
| Page Range: | pp. 1970-1977 | ||||
| DOI: | 10.1021/ct501032v | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Funder: | Canada Research Chairs (CRC), Natural Sciences and Engineering Research Council of Canada (NSERC), Fonds québécois de la recherche sur la nature et les technologies (FQRNT), Calcul Québec (CQ), Islamic Development Bank |
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