| Spectra and Spin Polarization of the Valence Band Auger Emission from Cr （100） Surface |
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| 引用本文： | 袁建民 L.Fritsche J.Noffke.Spectra and Spin Polarization of the Valence Band Auger Emission from Cr （100） Surface[J].中国物理快报,2003,20(10):1864-1867. |
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| 作者姓名： | 袁建民 L.Fritsche J.Noffke |
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| 作者单位： | [1]DepartmentofAppliedPhysics,NationalUniversityofDefenseTechnology,Changsha410073 [2]InstitutfuerTheoretischePhysik,TUClausthalD-38678Clausthal-Zellerfeld,F.R.Germany |
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| 摘 要： | Calculations have been carried out on spin-polarized Auger electron emission from a seven-layer chromium (lO0)-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 L3M23 V- and L3 VV-transRions 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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| 关 键 词： | 光谱 自旋极化 Cr（100） 铬表面 电子发射 价带螺旋发射 |
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