Electronic signature of the magicity and ionic bonding inclusters
- 12 March 2002
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 65 (12), 125105
- https://doi.org/10.1103/physrevb.65.125105
Abstract
Total energies and equilibrium geometries of neutral and anionic and Na, K) clusters have been obtained following an optimization of their structure without any symmetry constraint. The calculations are based on molecular-orbital approach and the gradient-corrected density-functional theory. It is shown that although the binding energy of clusters do not differ much from that of their neighbors, their ionization potentials, highest occupied molecular orbital and lowest unoccupied molecular orbital gaps, and electron affinities bear distinct signature of their magicity. That the binding of with alkali atoms is predominantly ionic is derived by comparing the electron affinity of with other known salts.
Keywords
This publication has 16 references indexed in Scilit:
- Structure and stability of cluster-assembled solid AlC(Si): A first-principles studyPhysical Review B, 1997
- Generalized Gradient Approximation Made SimplePhysical Review Letters, 1996
- Evidence for a new class of solids. First-principles study of K(Al13)Chemical Physics Letters, 1996
- Designing ionic solids from metallic clustersChemical Physics Letters, 1994
- Crystals from metallic clusters: A first-principles calculationPhysical Review B, 1993
- Assembling crystals from clustersPhysical Review Letters, 1992
- Dissociation channels ofclusters (3≤N≤37)Physical Review B, 1990
- Thermal metal cluster anion reactions: Behavior of aluminum clusters with oxygenThe Journal of Chemical Physics, 1989
- Probes for electronic and geometrical shell structure effects in alkali-metal clusters. Photoionization measurements on KxLi, KxMg and KxZn(x < 25)Chemical Physics Letters, 1985
- Electronic Shell Structure and Abundances of Sodium ClustersPhysical Review Letters, 1984