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

doi:10.1088/1674-1056/23/9/097103

Abstract Micro-patterning is considered to be a promising way to analyze phase-separated manganites. We investigate resistance in micro-patterned La_0.325Pr_0.3Ca_0.375MnO₃ 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 T_p 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.

Keywords: metal-insulator transition micro-wire phase separation manganites

Received: 20 May 2014
Revised: 27 May 2014
Accepted manuscript online:

PACS:	71.30.+h	(Metal-insulator transitions and other electronic transitions)
	78.30.cd	(Solutions and ionic liquids)
	64.75.Gh	(Phase separation and segregation in model systems (hard spheres, Lennard-Jones, etc.))

Fund: Project supported by the National Basic Research Program of China (Grant Nos. 2011CBA00106 and 2014CB921401) and the National Natural Science Foundation of China (Grant Nos. 11174342, 91321208, and 11374344).

Corresponding Authors: Zheng Dong-Ning
E-mail: lijie@iphy.ac.cn;dzheng@aphy.iphy.ac.cn

Cite this article:

Cui Li-Min (崔丽敏), Li Jie (李洁), Wang Jia (王佳), Zhang Yu (张玉), Zheng Dong-Ning (郑东宁) Emergent reversible giant electroresistance in spacially confined La_0.325Pr_0.3Ca_0.375MnO₃ wires 2014 Chin. Phys. B 23 097103

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

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Emergent reversible giant electroresistance in spacially confined La_0.325Pr_0.3Ca_0.375MnO₃ wires