Study of the electronic and atomic structure of thermally treated SrTiO3(110) surfaces

被引：25

作者：

Gunhold, A

Beuermann, L

Gömann, K

Borchardt, G

Kempter, V

Maus-Friedrichs, W

Piskunov, S

Kotomin, EA

Dorfman, S

机构：

[1] Tech Univ Clausthal, Inst Phys & Phys Technol, D-38678 Clausthal Zellerfeld, Germany

[2] Tech Univ Clausthal, Inst Met, D-38678 Clausthal Zellerfeld, Germany

[3] Univ Osnabruck, Fachbereich Phys, D-49069 Osnabruck, Germany

[4] Latvian State Univ, Inst Solid State Phys, LV-1063 Riga, Latvia

[5] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[6] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

来源：

SURFACE AND INTERFACE ANALYSIS | 2003年 / 35卷 / 12期

关键词：

strontium titanate; metastable impact electron spectroscopy (MIES); UPS; STM; AFM; ab initio calculations;

D O I：

10.1002/sia.1638

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：

The electronic structure of heated SrTiO3(110) surfaces was investigated with metastable impact electron spectroscopy and ultraviolet photoelectron spectroscopy (He(l)). Scanning tunnelling microscopy and atomic force microscopy (AFM) were used to study the topology of the surface. The crystals were heated up to 1000degreesC under reducing conditions in ultrahigh vacuum or under oxidizing conditions in synthetic air for I h, respectively. Under both conditions microfacetting of the surface is observed. The experimental results are compared with ab initio Hartree-Fock calculations, also presented here, carried out for both ideal and reconstructed SrTiO3(110) surfaces. The results give direct evidence for Ti termination of the faceted TiO2 rows. Copyright (C) 2003 John Wiley Sons, Ltd.

引用

页码：998 / 1003

页数：6

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