›› 2014, Vol. 23 ›› Issue (9): 97103-097103.doi: 10.1088/1674-1056/23/9/097103

• RAPID COMMUNICATION • 上一篇    下一篇

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

崔丽敏, 李洁, 王佳, 张玉, 郑东宁   

  1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2014-05-20 修回日期:2014-05-27 出版日期:2014-09-15 发布日期:2014-09-15
  • 基金资助:
    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).

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

Cui Li-Min (崔丽敏), Li Jie (李洁), Wang Jia (王佳), Zhang Yu (张玉), Zheng Dong-Ning (郑东宁)   

  1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2014-05-20 Revised:2014-05-27 Online:2014-09-15 Published:2014-09-15
  • Contact: Zheng Dong-Ning E-mail:lijie@iphy.ac.cn;dzheng@aphy.iphy.ac.cn
  • Supported by:
    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).

摘要: 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.

关键词: metal-insulator transition, micro-wire, phase separation, manganites

Abstract: 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.

Key words: metal-insulator transition, micro-wire, phase separation, manganites

中图分类号:  (Metal-insulator transitions and other electronic transitions)

  • 71.30.+h
78.30.cd (Solutions and ionic liquids) 64.75.Gh (Phase separation and segregation in model systems (hard spheres, Lennard-Jones, etc.))