Length scales in core level excitation: C 1s x-ray absorption of C-60/Al

被引：27

作者：

Maxwell, AJ ^{[1
]}

Bruhwiler, PA ^{[1
]}

Arvanitis, D ^{[1
]}

Hasselstrom, J ^{[1
]}

Martensson, N ^{[1
]}

机构：

[1] UNIV UPPSALA,DEPT PHYS,S-75121 UPPSALA,SWEDEN

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.79.1567

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present evidence for atomic site-dependent excitonic effects in the x-ray absorption spectrum of an ordered chemisorbed monolayer of C-60/Al(110). We observe that the broadening in the 5t(1u)-derived resonance and the corresponding core level resonant photoemission intensity varies with the x-ray incidence angle. This can be understood as due to changes in the strength of the interaction between the x-ray absorption final state and the substrate bands. This study provides the first direct measurement of the length scale for the localization of an excited state by the core hole.

引用

页码：1567 / 1570

页数：4

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