Surface structure of SrTiO3(100)-(√5 x √5)-R26.6°

被引：92
|
作者：
Kubo, T [1 ]
Nozoye, H [1 ]
机构：
[1] Natl Inst Mat & Chem Res, Tsukuba, Ibaraki 3058565, Japan
来源：
PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 09期
关键词：
D O I：
10.1103/PhysRevLett.86.1801
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Atomic and electronic structures of the SrTiO3(100)-(root5 x root5)-R26.6 degrees surface are studied by using scanning tunneling microscopy (STM) and noncontact atomic force microscopy (NC-AFM). Instead of the well established oxygen vacancy model, it is found that a structural model, consisting of an ordered Sr adatom at the oxygen fourfold site of a TiO2 terminated layer, can explain the experimental results very well. We theoretically simulate the model cluster with the first-principles total-energy calculation. Calculated density of states and images for STM and NC-AFM are in good agreement with the experimental results.
引用
收藏
页码：1801 / 1804
页数：4
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