Electronic structure of K doped C60 monolayers on Ag(001)

被引：30
|
作者：
Cepek, C
Sancrotti, M
Greber, T
Osterwalder, J
机构：
[1] INFM, Lab Nazl TASC, I-34012 Trieste, Italy
[2] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland
来源：
SURFACE SCIENCE | 2000年 / 454卷 / 01期
关键词：
alkali metals; fullerenes; photoelectron spectroscopy;
D O I：
10.1016/S0039-6028(00)00135-7
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：
The doping of a C-60/Ag(100) interface with K is studied by high resolution valence band photoemission spectroscopy. With increasing potassium exposure the progressive filling of the C-60 lowest unoccupied molecular orbital (LUMO) derived band is observed. The charge transfer onto the C-60 molecules is quantified from the observed binding energies of the LUMO derived band. Up to a half filled LUMO Ilo rigid band shift is found. Furthermore the intensity of the highest occupied molecular orbital is not constant but shows in normal emission a pronounced dip between half and complete LUMO filling. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：467 / 471
页数：5
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