Dynamical LEED study of Pd(111)-(√3x√3)R30°-Xe -: art. no. 195411

被引：25
|
作者：
Caragiu, M [1 ]
Seyller, T [1 ]
Diehl, RD [1 ]
机构：
[1] Penn State Univ, Dept Phys, University Pk, PA 16802 USA
来源：
PHYSICAL REVIEW B | 2002年 / 66卷 / 19期
关键词：
D O I：
10.1103/PhysRevB.66.195411
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A low-energy electron diffraction (LEED) study of Pd(111)-(root3xroot3)R30degrees-Xe at 77 K indicates that the Xe adsorption site is on top of the Pd atoms. The Xe-Pd bond length is 3.07 Angstrom+/-0.06 Angstrom. The substrate structure is essentially unrelaxed from the bulk structure. These results contrast with an earlier spin-polarized LEED study, which indicated that hollow sites are occupied in this structure. The low-coordination-site geometry for Xe on Pd(111) is discussed in the context of earlier experimental studies and recent density functional theory results for Xe adsorption on metal surfaces.
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