A Real-Space Full Multigrid study of the fragmentation of Li11+ clusters

Details A Real-Space Full Multigrid study of the fragmentation of Li11+ clusters A Real-Space Full Multigrid study of the fragmentation of Li11+ clusters

1998-10-02

arxiv.org/abs/cond-mat/9810019v1

Physics

Condensed Matter

9 pages + 6 Figures (in gzipped tar file)

Scientific paper

10.1103/PhysRevB.59.7868

We have studied the fragmentation of Li11+ clusters into the two experimentally observed products (Li9+,Li2) and (Li10+,Li) The ground state structures for the two fragmentation channels are found by Molecular Dynamics Simulated Annealing in the framework of Local Density Functional theory. Energetics considerations suggest that the fragmentation process is dominated by non-equilibrium processes. We use a real-space approach to solve the Kohn-Sham problem, where the Laplacian operator is discretized according to the Mehrstellen scheme, and take advantage of a Full MultiGrid (FMG) strategy to accelerate convergence. When applied to isolated clusters we find our FMG method to be more efficient than state-of-the-art plane wave calculations.

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