Surface X-ray emission from lanthanide metals

被引：2

作者：

Hübinger, F

Shulakov, AS

Starke, K

Grigoriev, A

Kaindl, G

机构：

[1] Free Univ Berlin, Inst Expt Phys, D-14195 Berlin, Germany

[2] St Petersburg State Univ, Inst Phys, St Petersburg 198904, Russia

来源：

SURFACE SCIENCE | 2003年 / 526卷 / 1-2期

关键词：

lanthanides; metallic surfaces; X-ray emission;

D O I：

10.1016/S0039-6028(02)02671-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

O-3 X-ray emission (XE) upon 5p(3/2) electron-impact ionization of La(0 0 0 1) and Sm(0 0 0 1) metal surfaces exhibits up to 30% spectral intensity from the topmost atomic surface layer. The energy separation of surface and bulk XE peaks is explained by the surface core-level shift of La and the surface valence transition of Sm. While the bulk XE spectra are in reasonable agreement with theoretical sd partial density of states (DOS), the experimental access to the partial surface-layer DOS opens new opportunities in studying surface phenomena in lanthanide metals and compounds. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：L137 / L142

页数：6

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