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On the calculation of complete dissociation curves of closed-shell pseudo-onedimensional systems via the complete active space method of increments.
- Source :
-
Journal of Chemical Physics . 2015, Vol. 143 Issue 11, p1-10. 10p. 1 Diagram, 3 Charts, 11 Graphs. - Publication Year :
- 2015
-
Abstract
- The method of increments (MoI) has been employed using the complete active space formalism in order to calculate the dissociation curve of beryllium ring-shaped clusters Ben of different sizes. Benchmarks obtained through different quantum chemical methods including the ab initio density matrix renormalization group were used to verify the validity of the MoI truncation which showed a reliable behavior for the whole dissociation curve. Moreover we investigated the size dependence of the correlation energy at different interatomic distances in order to extrapolate the values for the periodic chain and to discuss the transition from a metal-like to an insulator-like behavior of the wave function through quantum chemical considerations. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 143
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 109972837
- Full Text :
- https://doi.org/10.1063/1.4930861