Field-programmable rectification in rutile TiO2 crystals

被引：90

作者：

Jameson, John R. ^{[1
]}

Fukuzumi, Yoshiaki

Wang, Zheng

Griffin, Peter

Tsunoda, Koji

Meijer, G. Ingmar

Nishi, Yoshio

机构：

[1] Stanford Univ, Ctr Integrated Syst, Stanford, CA 94305 USA

[2] Fujitsu Labs Ltd, Atsugi, Kanagawa 2430197, Japan

[3] Zurich Res Lab, IBM Res, CH-8803 Ruschlikon, Switzerland

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 11期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2769961

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors report "field-programmable rectification" in crystals of rutile TiO2. A "programming" voltage is applied between two Pt electrodes on the surface of a crystal. Afterwards, current can pass in the direction of the programming voltage, but not in the reverse direction. The polarity of the rectification can be reversed by applying a programming voltage of opposite sign. The effect was observed on the (110) and (100) surfaces, but not the (001) surface. The proposed mechanism is field-induced motion of oxygen vacancies, which pile up under the negative terminal, eliminating a Schottky barrier, but leaving one at the positive terminal intact.

引用

页数：3

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