NATURE OF THE CHARGE LOCALIZED BETWEEN ALKALI ADATOMS AND METAL SUBSTRATES

被引:60
作者
WERTHEIM, GK
RIFFE, DM
CITRIN, PH
机构
[1] AT and T Bell Laboratories, Murray Hill
来源
PHYSICAL REVIEW B | 1994年 / 49卷 / 07期
关键词
D O I
10.1103/PhysRevB.49.4834
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Two previously unappreciated features in photoemission spectra from alkali atoms adsorbed on W(110), namely, the sign of the alkali-induced surface-atom core-level shift of the substrate at low coverage and the very large alkali shallow core-hole lifetime width at all coverages, show that the alkali-substrate interaction is not well described by a transfer of alkali charge. Instead, both features point to the formation of a charge cloud between the alkali adatom and substrate that is derived largely from alkali valence states.
引用
收藏
页码:4834 / 4841
页数:8
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