Core excitons and inner well resonances in surface soft x-ray absorption (SSXA) spectra. Bianconi, A. Surface Science, 89(1-3):41–50, 1979. Paper doi abstract bibtex The surface soft X-ray absorption (SSXA) spectra of about one monolayer of Al 2 O 3 and of SiO 2 has been measured. We demonstrate that the near L 2,3 edge structures (Kossel strructures), due to ” core excitons” and ” inner well resonances” can give both structural and electronic information of local character which are important in surface physics. A comparison with the structural information which can be extracted from SEXAFS structures appearing at higher photon energies is discussed. We have found that the local structure of the oxide monolayers is formed by Si—O 4 and Al—O 6 complexes. The binding energy of surface and bulk core excitons are the same in spite of the shift of the initial state energy. Information on the surface density of states of the conduction band of the Si(111) surface have been extracted from the SSXA spectrum of the clean Si surface.
@article{bianconi_core_1979,
title = {Core excitons and inner well resonances in surface soft x-ray absorption ({SSXA}) spectra},
volume = {89},
issn = {00396028},
url = {http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVX-46X463D-4G&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=a5b14a3978c054992a7ac292b8cafb8c},
doi = {10.1016/0039-6028(79)90590-9},
abstract = {The surface soft X-ray absorption (SSXA) spectra of about one monolayer of Al 2 O 3 and of SiO 2 has been measured. We demonstrate that the near L 2,3 edge structures (Kossel strructures), due to ” core excitons” and ” inner well resonances” can give both structural and electronic information of local character which are important in surface physics. A comparison with the structural information which can be extracted from SEXAFS structures appearing at higher photon energies is discussed. We have found that the local structure of the oxide monolayers is formed by Si—O 4 and Al—O 6 complexes. The binding energy of surface and bulk core excitons are the same in spite of the shift of the initial state energy. Information on the surface density of states of the conduction band of the Si(111) surface have been extracted from the SSXA spectrum of the clean Si surface.},
number = {1-3},
journal = {Surface Science},
author = {Bianconi, A.},
year = {1979},
keywords = {camerino, msr, si, surface, xanes},
pages = {41--50}
}
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