Structure of Al(111)-(2x2)-Rb

被引:0
作者
Adams, DL [1 ]
Nielsen, MM
Burchhardt, J
Andersen, JN
机构
[1] Aarhus Univ, Inst Phys & Astron, DK-8000 Aarhus C, Denmark
[2] Lund Univ, Inst Phys, Dept Synchrotron Radiat Res, S-22362 Lund, Sweden
关键词
D O I
10.1103/PhysRevB.60.11078
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The atomic geometry of the Al(111)-(2 x 2)-Rb phase formed by adsorption of one-quarter monolayer Rb on Al(111) at 100 K has been determined by analysis of low-energy electron diffraction measurements. The adsorbed Rb atoms are found to occupy on-top sites an a rumpled first layer of Al atoms, as in the corresponding (root 3 x root 3)R30 degrees phases formed by adsorption of one-third monolayer K, Rb, and Cs on Al(111) at low temperature. However, the adsorbed Rb atoms in the (2 x 2) phase have anomoiously large thermal vibrations. [s0163-1829(99)04939-5].
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页码:11078 / 11083
页数:6
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