Electronic and structural properties of sodium clusters

José Luís Martins, Jean Buttet, Roberto Car

Research output: Contribution to journalArticlepeer-review

332 Scopus citations

Abstract

We present an investigation of the structural and electronic properties of the sodium clusters Nan and Nan + with n8 and n=13, based on self-consistent pseudopotential local-spin-density calculations. In order to obtain the equilibrium geometries without imposing any symmetry constraint, we start from randomly generated cluster geometries and let them relax under the action of the forces on the atoms, which are derived from the Hellmann-Feynman theory. We find that the clusters with up to five atoms have planar equilibrium geometries, the six-atom cluster is quasiplanar, and real three-dimensional structures only begin to occur when the number of atoms is greater than or equal to seven. We compare our results with recently obtained experimental data and find good agreement with the measured photoionization appearance potentials and the electron-spin-resonance spectra. Metallic bonding is the dominant feature of our calculated electronic structures and we show that the equilibrium geometries can be explained with a simple model having the delocalized nature of the metallic electrons and the Jahn-Teller effect as basic ingredients.

Original languageEnglish (US)
Pages (from-to)1804-1816
Number of pages13
JournalPhysical Review B
Volume31
Issue number4
DOIs
StatePublished - Jan 1 1985

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Electronic and structural properties of sodium clusters'. Together they form a unique fingerprint.

Cite this