ELECTRONIC-STRUCTURE OF CR-CLUSTERS ON GRAPHITE

被引：13

作者：

LOZZI, L ^{[1
]}

PASSACANTANDO, M ^{[1
]}

PICOZZI, P ^{[1
]}

SANTUCCI, S ^{[1
]}

DECRESCENZI, M ^{[1
]}

机构：

[1] UNIV ROME 2,DEPT FIS,I-00173 ROME,ITALY

来源：

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS | 1991年 / 20卷 / 1-4期

关键词：

D O I：

10.1007/BF01544018

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The electronic structure of small chromium clusters deposited by evaporation onto clean polycrystalline graphite has been studied by means of Auger, X-ray Photoemission (XPS) and Electron Energy Loss (EELS) spectroscopies. The XPS results show an increase in the binding energy of both core levels and valence band reducing the cluster size. The EELS measurements show a variation of the intensity ratio of L3-to-L2 ionization core edges. We interpret this change as due to different redistribution, within the cluster d-band, of the empty states above the Fermi level. As a consequence the XPS results may also be attributed to sizeable change of the electronic structure of the small clusters.

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页码：387 / 390

页数：4

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