Electronic structure and binding energies of aluminum clusters
- 1 May 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 43 (13), 10647-10653
- https://doi.org/10.1103/physrevb.43.10647
Abstract
Electronic structures and binding energies of , , and clusters with and fcc () symmetries are calculated by density-functional theory (DFT) with a spin-unrestricted local-density-approximation discrete-variational-method Xα scheme. The structure is found to be much more stable than fcc for . For , the total binding energy of the fcc cuboctrahedron is about 0.5 eV lower than the , which implies a transition from a polyhedral to a lattice-based structure with cluster size. The ionization energies, electron affinities, and energy spectra and densities of states are also calculated for selected sizes and geometries. The ionization potentials and electron affinities agree with experimental data very well. The crystal-field splitting is estimated by correlating energy levels with those from jellium-model calculations of Chou and Cohen and explains the anomalies of the experimental ionization-potential curve successfully.
Keywords
This publication has 34 references indexed in Scilit:
- Electronic shell structure of group-IIIA metal atomic clustersPhysical Review Letters, 1990
- Nonjellium-to-jellium transition in aluminum cluster polarizabilitiesPhysical Review Letters, 1989
- Ups of negative aluminum clustersChemical Physics Letters, 1988
- Photoelectron spectroscopy of jet-cooled aluminium cluster anionsThe European Physical Journal D, 1988
- Collision induced dissociation of metal cluster ions: Bare aluminum clusters, Al+n (n=3–26)The Journal of Chemical Physics, 1987
- Electronic shell structure in simple metal clustersPhysics Letters A, 1986
- Electronic Shell Structure and Abundances of Sodium ClustersPhysical Review Letters, 1984
- Electronic Shell Structure and Abundances of Sodium ClustersPhysical Review Letters, 1984
- Work function of small metal particles: Self-consistent spherical jellium-background modelPhysical Review B, 1984
- Variational spherical model of small metallic particlesSurface Science, 1981