Surface structure of MBE-grown Fe3O4(001) by X-ray photoelectron diffraction and scanning tunneling microscopy

被引：90

作者：

Chambers, SA ^{[1
]}

Thevuthasan, S ^{[1
]}

Joyce, SA ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA

来源：

SURFACE SCIENCE | 2000年 / 450卷 / 1-2期

关键词：

iron oxide; low index single crystal surfaces; photoelectron diffraction; scanning tunneling microscopy; surface relaxation and reconstruction; surface structure; morphology; roughness; and topography;

D O I：

10.1016/S0039-6028(00)00230-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have investigated the surface termination and interlayer relaxations of (root 2 x root 2)R45 degrees-Fe3O4(001) as grown on MgO(001) by oxygen-plasma-assisted molecular beam epitaxy. Despite the fact that autocompensated surfaces can be constructed in principle by terminating with either a half layer of tetrahedral Fe, or a modified layer of octahedral Fe plus tetrahedral O, the combination of photoelectron diffraction and scanning tunneling microscopy suggests the former. The first four interlayer spacings are relaxed by -14, -57, -19, and +29% of the respective bulk value. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：L273 / L279

页数：7

共 19 条

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