A NEW METASTABLE EPITAXIAL SILICIDE - FESI2/SI(111)

被引：29
|
作者：
DEPARGA, ALV
DELAFIGUERA, J
OCAL, C
MIRANDA, R
机构：
[1] Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, Cantoblanco
来源：
ULTRAMICROSCOPY | 1992年 / 42卷
关键词：
D O I：
10.1016/0304-3991(92)90367-S
中图分类号：
TH742 [显微镜];
学科分类号：
摘要：
A metastable phase of FeSi2 that is not present in the bulk phase diagram can be grown epitaxially on Si(111). Scanning tunneling microscope images reveal the surface reconstruction of this phase and allows one to model its crystallographic structure. It crystallizes with a cubic structure, probably a fluorite structure like CoSi2 and NiSi2, lattice-matched to Si. The (111) surface has a 2 x 2 reconstruction according to LEED. The origin of this reconstruction is reported here for the first time. It is due to a superstructure of Si adatoms with local bonding similar to that of the adatoms in the Si(111)7 x 7 reconstruction.
引用
收藏
页码：845 / 850
页数：6
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