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arXiv · 1410.2133

Nudged-elastic band method with two climbing images: finding transition states in complex energy landscapes

Nikolai A. Zarkevich·Duane D. Johnson
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Abstract

The nudged-elastic band (NEB) method is modified with concomitant two climbing images (C2-NEB) to find a transition state (TS) in complex energy landscapes, such as those with serpentine minimal energy path (MEP). If a single climbing image (C1-NEB) successfully finds the TS, C2-NEB finds it with higher stability and accuracy. However, C2-NEB is suitable for more complex cases, where C1-NEB misses the TS because the MEP and NEB directions near the saddle point are different. Generally, C2-NEB not only finds the TS but guarantees that the climbing images approach it from the opposite sides along the MEP, and it estimates accuracy from the three images: the highest-energy one and its climbing neighbors. C2-NEB is suitable for fixed-cell NEB and the generalized solid-state NEB (SS-NEB).

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Nikolai A. Zarkevich, Duane D. Johnson. 2014-10-07. Nudged-elastic band method with two climbing images: finding transition states in complex energy landscapes. https://doi.org/10.1063/1.4905209

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