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Spectra and Spin Polarization of the Valence Band Auger Emission from Cr (100) Surface |
| YUAN Jian-Min1;L. Fritsche2;J. Noffke2 |
| 1Department of Applied Physics, National University of Defense Technology, Changsha 410073
2Institut für Theoretische Physik, TU Clausthal D-38678 Clausthal-Zellerfeld, F. R. Germany |
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| Cite this article: |
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YUAN Jian-Min, L. Fritsche, J. Noffke 2003 Chin. Phys. Lett. 20 1864-1867 |
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Abstract Calculations have been carried out on spin-polarized Auger electron emission from a seven-layer chromium (100)-film. The core and valence states concerning the Auger transition are obtained from a self-consistent full-potential linearized augmented plane wave calculation by using a repeated slab geometry. The calculations refer to experiments on the L3M23V- and L3VV-transitions that have recently been carried out by Heinzmann et al. The Auger spectrum obtained for the L3VV transition agrees relatively well with our calculations whereas the observed L3M23V-Auger structure is considerably wider than that predicted by our theory. Nevertheless, the spin-polarization in the latter case, which is about -13%, is in fair agreement with the experiment, different from the L3VV-transition where the experiment yields -10% as opposed to the theoretical value of -25%. We give possible reasons for the origin of these discrepancies.
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| Keywords:
79.20.Fv
73.20.At
73.20.Dx
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Published: 01 October 2003
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| PACS: |
79.20.Fv
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(Electron impact: Auger emission)
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73.20.At
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(Surface states, band structure, electron density of states)
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73.20.Dx
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