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Ab initio and semiempirical calculations of H- centers in mgo crystals

  • University of Latvia
  • Universidad Carlos III de Madrid
  • United States Department of Energy

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

The atomic and electronic structure of (Formula presented) ions substituting for (Formula presented) ions in regular sites in MgO crystals are calculated using an ab initio Hartree-Fock (HF) cluster approach and its semiempirical version, intermediate neglect of the differential overlap. The theoretical optical absorption energy is predicted to be 10 eV, which is supported by analysis of experimental data for the (Formula presented) centers in a series of ionic crystals. The HF simulations of (Formula presented) ion diffusion via direct interstitial hops along the [100] axis predict an activation energy of about 3 eV.

Original languageEnglish
Pages (from-to)1885-1890
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume59
Issue number3
DOIs
Publication statusPublished - 1 Jan 1999

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