Electron-correlation effects on geometrical and electronic structures of SinNa clusters

R. Kishi, Atsushi Nakajima, S. Iwata, K. Kaya

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The geometries and energies of silicon-sodium binary clusters (SinNa, n = 2-7) were investigated with the inclusion of electron-correlation effects using the second-order Møller-Plesset perturbation theory (MP2) with the 6-31G basis set. In addition, the fourth-order (MP4) energies were evaluated to determine the ground-state isomers. Si4Na cluster was calculated with the polarized 6-31G* basis set. For all of the SinNa clusters, the most stable isomers have bridge-site type structures. Apart from the bridge-site type Si6Na, the structure of the most stable isomer of SinNa keeps the frame of the corresponding Sin cluster unchanged, and the electronic structure of SinNa is similar to that of the corresponding negative ion Si- n. The silicon framework of the bridge-site type of Si6Na is distorted from the compressed octahedron to the face-capped trigonal bipyramid.

Original languageEnglish
Pages (from-to)365-369
Number of pages5
JournalSurface Review and Letters
Volume3
Issue number1
Publication statusPublished - 1996 Feb

Fingerprint

Electron correlations
Isomers
Electronic structure
Silicon
electronic structure
isomers
electrons
Ground state
silicon
Negative ions
Sodium
negative ions
Geometry
perturbation theory
sodium
inclusions
ground state
energy
geometry

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

Cite this

Electron-correlation effects on geometrical and electronic structures of SinNa clusters. / Kishi, R.; Nakajima, Atsushi; Iwata, S.; Kaya, K.

In: Surface Review and Letters, Vol. 3, No. 1, 02.1996, p. 365-369.

Research output: Contribution to journalArticle

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