MIGRATION OF CU ADATOMS ON A CU(100) SURFACE, STUDIED WITH LOW-ENERGY ION-SCATTERING (LEIS)

被引：81
|
作者：
BREEMAN, M [1 ]
BOERMA, DO [1 ]
机构：
[1] UNIV GRONINGEN, CTR MAT SCI, 9718 CM GRONINGEN, NETHERLANDS
来源：
SURFACE SCIENCE | 1992年 / 269卷
关键词：
D O I：
10.1016/0039-6028(92)91254-9
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：
We report the observation of adatoms appearing on the surface due to ion beam irradiation. These adatoms are interpreted to be self-interstitials, created in the damage cascades, which have diffused to the surface where they are trapped. From our LEIS experiments on a stepped Cu(100) surface we determined that on average 4.5(1.5) Cu adatoms per impinging ion reach the surface. The temperature at which Cu atoms on a Cu(100) surface become mobile was determined to be 140(5) K. This value was deduced from the temperature dependence of the Cu adatom yield.
引用
收藏
页码：224 / 228
页数：5
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