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High-resolution normal emission UV-photoelectron spectra and band structure of Cu

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Zeitschrift für Physik B Condensed Matter

Abstract

The energy distribution curves of photoelectrons emitted along the normal direction from Cu (111), (001) and (110) surfaces using unpolarized HeI (hv=21.2 eV) and HeII (hv=40.8 eV, 48.4 eV) radiation incident at 45° to the surface were measured. For the interpretation the band structure as calculated by Janak et al. and by the combined interpolation scheme was used. The high resolution spectra along the [111] and [001] directions show dominant features from direct transitions, indicating strong residualk z conservation, and density of states features, too. The ‘band gap’ emission along the [110] direction using HeI radiation can be explained with direct transitions into ‘evanescent’ states with nearly free electron bands. From the width of the peaks electron escape depths were calculated.

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Authors and Affiliations

  1. Fachbereich Physik, Universität des Saarlandes, Im Stadtwald, D-6600, Saarbrücken, Germany

    R. Courths, S. Hüfner & H. Schulz

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  1. R. Courths
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  2. S. Hüfner
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  3. H. Schulz
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Courths, R., Hüfner, S. & Schulz, H. High-resolution normal emission UV-photoelectron spectra and band structure of Cu. Z Physik B 35, 107–117 (1979). https://doi.org/10.1007/BF01321236

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  • DOI: https://doi.org/10.1007/BF01321236

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