Articles producció científica> Química Física i Inorgànica

Ab initio cluster-model study of the on-top chemisorption of F and Cl on Si(111) and Ge(111) surfaces

  • Dades identificatives

    Identificador: PC:3295
    Autors:
    RICART PLA, JOSE MANUELF. IllasJ. Rubio
    Resum:
    The interaction of atomic F and Cl with Si4H9 and Ge4H9 cluster models has been studied by using ab initio pseudopotentials and basis sets of increasing complexity. The results show that the effect of d orbitals is important in order to reproduce the experimental findings. However, the use of polarization functions in the atoms which are directly involved in the chemisorption bond leads to results which are very close to those obtained using extended basis sets. The local nature of the chemisorption bond is also interpreted by means of a Mulliken population analysis. For F-Si4H9 and Cl-Si4H9 the present results are in good agreement with previous ab initio all-electron calculations, and for the chemisorption of Cl on Si(111) and Ge(111) surfaces, good agreement is found with respect to the available experimental results as well as with previous slab calculations based on the local-density-functional formalism.
  • Altres:

    Departament: Química Física i Inorgànica
    Autor/s de la URV: RICART PLA, JOSE MANUEL F. Illas J. Rubio
    Paraules clau: Chemisorption cluster model SCF ab initio
    Resum: The interaction of atomic F and Cl with Si4H9 and Ge4H9 cluster models has been studied by using ab initio pseudopotentials and basis sets of increasing complexity. The results show that the effect of d orbitals is important in order to reproduce the experimental findings. However, the use of polarization functions in the atoms which are directly involved in the chemisorption bond leads to results which are very close to those obtained using extended basis sets. The local nature of the chemisorption bond is also interpreted by means of a Mulliken population analysis. For F-Si4H9 and Cl-Si4H9 the present results are in good agreement with previous ab initio all-electron calculations, and for the chemisorption of Cl on Si(111) and Ge(111) surfaces, good agreement is found with respect to the available experimental results as well as with previous slab calculations based on the local-density-functional formalism.
    Grup de recerca: Química Quàntica
    Àrees temàtiques: Química Chemistry Química
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 1098-0121
    Identificador de l'autor: 0000-0002-2610-5535
    Pàgina final: 8075
    Volum de revista: 31
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.31.8068
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI de l'article: 10.1103/PhysRevB.31.8068
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 1985
    Pàgina inicial: 8068
    Tipus de publicació: Artículo Article Article
  • Paraules clau:

    Chemisorption
    cluster model
    SCF ab initio
    Química
    Chemistry
    Química
    1098-0121
  • Documents:

  • Cerca a google

    Search to google scholar