Surface effects in the valence band XPS spectrum of copper |
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| Authors: | P. Steiner S. Hüfner A.J. Freeman Ding-sheng Wang |
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| Affiliation: | Fachbereich Physik, Universität des Saarlandes, Saarbrücken, Federal Republic of Germany;Physics Department, Northwestern University, Evanston, IL 60201, U.S.A. |
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| Abstract: | Comparison of valence band XPS spectra of Cu samples with theoretical density of states shows a high intensity near the upper edge of the d-band. This is a feature common for most d-band metals. However, if the difference in the density of states of the first two atomic layers with respect to the bulk is taken into account, good agreement between theory and experiment is found. |
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