A high-resolution electron energy loss investigation of the Ag- and Au-GaAs(110) interfaces is presented. The loss spectra (0.5 less than or equal to E(loss) less than or equal to 5 eV) show clearly a broad feature centred at 1.2 eV, that is within the energy gap, due to the metal coverage. This structure, which starts appearing at coverages as low as 0.1 Angstrom, becomes undetectable at coverages of 24 Angstrom of Ag and 1.6 Angstrom of Au. The gap energy region has been examined on several freshly cleaved surfaces. In the case of bad cleaveges, a peak similar to that induced by the metal overlayer develops, a fact which supports mechanisms ascribing the Fermi level pinning to defect states.
Arciprete, F., Colonna, S., Fanfoni, M., Patella, F., & Balzarotti, A. (1995). Electron energy loss study of Ag- and Au-GaAs(110) interfaces. In Journal of Electron Spectroscopy and Related Phenomena (pp.449-454). AMSTERDAM : ELSEVIER SCIENCE BV.
Autori: | |
Autori: | Arciprete, F; Colonna, S; Fanfoni, M; Patella, F; Balzarotti, A |
Titolo: | Electron energy loss study of Ag- and Au-GaAs(110) interfaces |
Nome del convegno: | 6th International Conference on Electron Spectroscopy (ICES 6) |
Luogo del convegno: | ROME, ITALY |
Anno del convegno: | JUN 19-23, 1995 |
Enti collegati al convegno: | Univ La Sapienza, Univ Tor Vergata, Univ Rome III, CNR, Gruppo Nazionale Struttura Materia |
Rilevanza: | Rilevanza internazionale |
Sezione: | contributo |
Data di pubblicazione: | 1995 |
Settore Scientifico Disciplinare: | Settore FIS/03 - Fisica della Materia |
Lingua: | English |
Tipologia: | Intervento a convegno |
Citazione: | Arciprete, F., Colonna, S., Fanfoni, M., Patella, F., & Balzarotti, A. (1995). Electron energy loss study of Ag- and Au-GaAs(110) interfaces. In Journal of Electron Spectroscopy and Related Phenomena (pp.449-454). AMSTERDAM : ELSEVIER SCIENCE BV. |
Appare nelle tipologie: | 02 - Intervento a convegno |