ODD-EVEN STAGGERING IN SIMPLE-MODELS OF METAL-CLUSTERS

Authors
MANNINEN M MANSIKKAAHO J NISHIOKA H TAKAHASHI Y
Citation
M. Manninen et al., ODD-EVEN STAGGERING IN SIMPLE-MODELS OF METAL-CLUSTERS, Zeitschrift fur Physik. D, Atoms, molecules and clusters, 31(4), 1994, pp. 259-267
Citations number
32
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Zeitschrift fur Physik. D, Atoms, molecules and clusters → ACNP
ISSN journal
01787683
Volume
31
Issue
4
Year of publication
1994
Pages
259 - 267
Database
ISI
SICI code
0178-7683(1994)31:4<259:OSISOM>2.0.ZU;2-W
Abstract
The odd-even staggering of free-electron metal clusters is studied usi ng several simple models: Noninteracting electrons in a rectangular bo x, triaxial harmonic oscillator, and Huckel model. Finite temperature effects are studied using the Monte Carlo method. All the models show qualitatively similar odd-even staggering. In the ground state the HOM O-LUMO gap is larger than the neighbouring energy gaps. The reduction of the odd-even staggering due to exchange and correlation is studied using the local-spin-density approximation.