Development of the electronic structure in a K-doped C-60 monolayer on a Ag(111) surface

被引：100

作者：

Tjeng, LH

Hesper, R

Heessels, ACL

Heeres, A

Jonkman, HT

Sawatzky, GA

机构：

[1] Solid State Physics Laboratory, Materials Science Centre, University of Groningen, 9747 AG Groningen

来源：

SOLID STATE COMMUNICATIONS | 1997年 / 103卷 / 01期

关键词：

fullerenes; surfaces and interfaces; photoelectron spectroscopies;

D O I：

10.1016/S0038-1098(97)00126-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present an electron spectroscopy study of the development of the electronic structure in the K-doped C-60 monolayer on a Ag(1 1 1) surface. We find that the occupation of the lowest unoccupied molecular orbital (LUMO) of the C-60 can be varied continuously from 0.75 (undoped) to 6.0 (fully doped). We also find that the density of states at the Fermi level for a doping level corresponding to 3 electrons per C-60 is at least a factor of two higher than that found from photoemission on bulk K3C60. This enhanced density of states at the Fermi level might suggest an increased superconducting transition temperature for the monolayer system. (C) 1997 Elsevier Science Ltd.

引用

页码：31 / 35

页数：5

共 37 条

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