Structure and contrast in scanning tunneling microscopy of oxides: FeO monolayer on Pt(111)

被引：96

作者：

Galloway, HC

Sautet, P

Salmeron, M

机构：

[1] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV SCI MAT,BERKELEY,CA 94720

[2] UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720

[3] ECOLE NORMALE SUPER,CHIM THEOR LAB,F-69464 LYON,FRANCE

[4] INST RECH CATALYSE,CNRS,F-69626 VILLEURBANNE,FRANCE

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.54.R11145

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We applied electron-scattering quantum-chemistry theory to investigate the origin of contrast in scanning tunneling microscopy images of iron oxide grown on Pt(111). We show that (a) image contrast and surface topography are not directly related; (b) the maxima in the images occur over O positions for Pt tips and over Fe positions for O-terminated tips; (c) the shea-range corrugation is always due to O-pz orbitals, with a small but important contribution of Fe; and (d) the state that carriers most of the tunneling current is located near the Fermi level and is made mostly of O (pz) and Fe 3d(z2) orbitals.

引用

页码：11145 / 11148

页数：4

共 20 条

[1] CONCEPTUAL ASPECTS OF STRUCTURE PROPERTY CORRELATIONS AND ELECTRONIC INSTABILITIES, WITH APPLICATIONS TO LOW-DIMENSIONAL TRANSITION-METAL OXIDES [J].