Current-voltage characteristics and ON/OFF ratio in ferroelectric tunnel junctions

被引：10

作者：

Lu, Xiaoyan ^{[1
,2
]}

Li, Hui ^{[1
]}

Cao, Wenwu ^{[2
]}

机构：

[1] Harbin Inst Technol, Sch Civil Engn, Harbin 150001, Peoples R China

[2] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2012年 / 112卷 / 05期

基金：

中国博士后科学基金; 美国国家科学基金会;

关键词：

ELECTRORESISTANCE; DEPOLARIZATION;

D O I：

10.1063/1.4748051

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Current-voltage characteristics of poled ferroelectric tunnel junction have been theoretically studied with the consideration of piezoelectric effect and interface potential due to the depolarization effect. Compared with piezoelectric effect, barrier potential changed by polarization switching is more significant. Tunnel currents with low and high resistances during the reading process are distinct, which have potential applications as low-cost, high-density, and fast-speed ferroelectric memories. The obtained ON/OFF ratio in a symmetry SrRuO3/BaTiO3/SrRuO3 structure is around 50 under a small applied voltage. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4748051]

引用

页数：6

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