DIRECT STRUCTURE DETERMINATION OF A COMPOSITE DOUBLE-LAYER SURFACE ALLOY BY X-RAY PHOTOELECTRON DIFFRACTION - P(2X2)-NA/AL(111)

被引:17
作者
FASEL, R [1 ]
AEBI, P [1 ]
SCHLAPBACH, L [1 ]
OSTERWALDER, J [1 ]
机构
[1] UNIV ZURICH, INST PHYS, CH-8057 ZURICH, SWITZERLAND
关键词
D O I
10.1103/PhysRevB.52.R2313
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The local structure of p(2X2)-Na/Al(111) has been investigated using angle-scanned full hemispherical x-ray photoelectron diffraction. The resulting diffraction patterns allow a direct and unequivocal determination of the surface atomic structure. Even though Na and Al are completely immiscible in the bulk, the p(2X2)-Na/Al(111) phase consists of a composite double-layer surface alloy where Na atoms take substitutional and fee hollow sites and Al atoms removed from the surface occupy hcp hollow sites.
引用
收藏
页码:R2313 / R2316
页数:4
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