Photoelectron spectroscopic study of the temperature-dependent termination of the LaAlO3(100) surface

被引：29

作者：

van der Heide, PAW ^{[1
]}

Rabalais, JW ^{[1
]}

机构：

[1] Univ Houston, Dept Chem, Houston, TX 77204 USA

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 297卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0009-2614(98)01121-X

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 temperature-dependent termination of the LaAlO3(100) surface has been studied by variable temperature angle-re solved monochromatic X-ray photoelectron spectroscopy. A high binding energy component in the Al 2p spectrum observed at T < 150 degrees C is absent at T > 250 degrees C; its presence and absence as a function of temperature are reversible. This component, also found to be localized to the outermost surface layer, exhibits trends consistent with the temperature-dependent rearrangement known to occur on the LaAlO3(100) surface, i.e. Al-O or La-O terminations below 150 degrees C and above 250 degrees C, respectively. The driving force behind this rearrangement is believed to be an oxygen deficiency in the Ist-atomic layer. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：350 / 356

页数：7

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