Stable C-atom displacements on HOPG surface under plasma low-energy argon-ion bombardment

被引：49
作者：
Rousseau, B
Estrade-Szwarckopf, H
Thomann, AL
Brault, P
机构：
[1] Univ Orleans, Grp Rech Energet Milieux Ion, UMR 6606, CNRS, F-45067 Orleans, France
[2] Univ Orleans, Ctr Rech Mat Divisee, UMR 6619, CNRS, F-45071 Orleans 2, France
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2003年 / 77卷 / 3-4期
关键词：
D O I：
10.1007/s00339-002-1538-x
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Surface defects are generated by an Ar plasma on crystalline graphite. In situ scanning tunneling microscopy reveals localized defects surrounded by a R30degrees superstructure (Friedel's charge oscillations) for short treatment times and long-range disordered lattices for longer treatment times. In situ X-ray photoelectron spectroscopy C 1s core-level spectra exhibit a broadening attributed to a distribution of C atoms in inequivalent sites. As implantation of heteroatoms and formation of vacancies can be ruled out, defects are attributed to stable displaced surface carbon atoms.
引用
收藏
页码：591 / 597
页数：7
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