EXCHANGE SPLITTING OF ADSORBATE-INDUCED BANDS ON THIN IRON FILMS

被引:23
作者
GETZLAFF, M
BANSMANN, J
WESTPHAL, C
SCHONHENSE, G
机构
[1] Universität Bielefeld, Fakultät für Physik
关键词
D O I
10.1016/0304-8853(92)91546-6
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Adsorbate-induced bands are investigated using energy-, angle- and spin-resolving photoelectron spectroscopy. With a ferromagnetic substrate these bands can show an exchange splitting. By means of epitaxial growth on W(110) or Au(100) we produced thin bcc iron films; layer-by-layer growth was monitored by means of MEED-oscillations. Spin-resolved spectra for different coverages with chemisorbed oxygen or CO or physisorbed Xe are shown. We found values of up to 1 eV exchange splitting of the oxygen 2p-derived band, analogous to prior measurements on bulk-crystals. Even for the physisorbed species magnetic interaction is evident. Aspects of the angular dependence as well as systematic differences of the line profiles of adsorbate-induced structures in the majority- and minority-spin channels are discussed.
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页码:1781 / 1782
页数:2
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