Emergent reversible giant electroresistance in spacially confined La0.325Pr0.3 Ca0.375MnO3 wires

Micro-patterning is considered to be a promising way to analyze phase-separated manganites. We investigate resistance in micro-patterned La0.325Pr0.3Ca0.375MnO3 wires with width of 10 μm, which is comparable to the phase separation scale in this material. A reentrant of insulating state at the metal...

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Bibliographic Details
Published in:中国物理B：英文版 2014 (9), p.6-9
Main Author: 崔丽敏 李洁 王佳 张玉 郑东宁
Format: Article
Language:English
Subjects:
I-V特性
可逆
导线宽度
电场驱动
电阻变化
空间
绝缘状态
锰氧化物
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Summary:Micro-patterning is considered to be a promising way to analyze phase-separated manganites. We investigate resistance in micro-patterned La0.325Pr0.3Ca0.375MnO3 wires with width of 10 μm, which is comparable to the phase separation scale in this material. A reentrant of insulating state at the metal-insulator temperature Tp is observed and a giant resistance change of over 90% driven by electric field is achieved by suppression of this insulating state. This resistance change is mostly reversible, The I-V characteristics are measured in order to analyze the origin of the giant electroresistance and two possible explanations are proposed.
ISSN:1674-1056
2058-3834