Tuning the charge state of a C60 single layer on Ag(100) by Na deposition

被引：7

作者：

Goldoni, A

Cepek, C

Larciprete, R

Pagliara, S

Sangaletti, L

Paolucci, G

机构：

[1] Sincrotrone Trieste SCpA, I-34012 Trieste, Italy

[2] INFM, Lab TASC, I-34012 Trieste, Italy

[3] Div Fis Applicata, ENEA, I-00044 Frascati, RM, Italy

[4] Univ Cattolica Sacro Cuore, Dipartimento Matemat & Fis, INFM, I-25121 Brescia, Italy

来源：

SURFACE SCIENCE | 2001年 / 482卷

关键词：

photoelectron spectroscopy; fullerenes; alkali metals; surface electronic phenomena (work function; surface potential; surface states; etc.);

D O I：

10.1016/S0039-6028(00)01024-4

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：

Core level and valence band photoemission spectroscopies show that for an ordered single layer of C-60 chemisorbed on a clean Ag(100) surface metallic phases are formed at any Na doping level, following a rigid band filling behaviour, until the conduction band is completely filled with 6 electrons/molecule. These observations, that contrast with the bulk phases behaviour, can be explained with an efficient screening of the Hubbard energy U in the C-60 bands due to the close proximity to a metallic surface and highlight the important role of electron correlation in the electronic properties of these systems. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：606 / 611

页数：6

共 28 条

[1] ELECTRONIC-PROPERTIES OF K-DOPED C(60) (111) - PHOTOEMISSION AND ELECTRON CORRELATION [J].