Foreign and native coordination effects in core-level spectra of mixed Be-Mg clusters

2002 
The core-ionization spectra of mixed Be-Mg clusters are computed by accurate ab initio methods. They are found to exhibit a variety of strong and unexpected effects originating from the presence of neighboring atoms of the same (native) or the other (foreign) element. The spectra reveal unusually low-lying intense satellites and the band shapes are sensitive to the local environment of the core-ionized atom. Foreign and native screening processes compete with each other resulting in specific spectral features which uniquely characterize the clusters.
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