Tuning the phase separation in La0.325Pr0.3Ca0.375MnO3 using theelectric double-layer field effect

doi:10.1088/1674-1056/23/9/098501

中国物理B ›› 2014, Vol. 23 ›› Issue (9): 98501-098501.doi: 10.1088/1674-1056/23/9/098501

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Tuning the phase separation in La_0.325Pr_0.3Ca_0.375MnO₃ using theelectric double-layer field effect

崔丽敏, 李洁, 张玉, 赵璐, 邓辉, 黄克强, 李贺康, 郑东宁

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

收稿日期:2013-04-08 修回日期:2014-05-16 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, 9131208, and 11374344).

Tuning the phase separation in La_0.325Pr_0.3Ca_0.375MnO₃ using theelectric double-layer field effect

Cui Li-Min (崔丽敏), Li Jie (李洁), Zhang Yu (张玉), Zhao Lu (赵璐), Deng Hui (邓辉), Huang Ke-Qiang (黄克强), Li He-Kang (李贺康), Zheng Dong-Ning (郑东宁)

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Received:2013-04-08 Revised:2014-05-16 Online:2014-09-15 Published:2014-09-15
Contact: Zheng Dong-Ning E-mail:dzheng@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, 9131208, and 11374344).

摘要/Abstract

摘要： Electric double-layer field effect experiments were performed on ultrathin films of La_0.325Pr_0.3Ca_0.375MnO₃, which is noted for its micrometer-scale phase separation. A clear change of resistance up to 220% was observed and the characteristic metal-insulator transition temperature T_P was also shifted. The changes of both the resistance and T_P suggest that the electric field induced not only tuning of the carrier density but also rebalancing of the phase separation states. The change of the charge-ordered insulating phase fraction was estimated to be temperature dependent, and a maximum of 16% was achieved in the phase separation regime. This tuning effect was partially irreversible, which might be due to an oxygen vacancy migration that is driven by the huge applied electric field.

关键词: electric double-layer field effect, manganites, phase separation

Abstract: Electric double-layer field effect experiments were performed on ultrathin films of La_0.325Pr_0.3Ca_0.375MnO₃, which is noted for its micrometer-scale phase separation. A clear change of resistance up to 220% was observed and the characteristic metal-insulator transition temperature T_P was also shifted. The changes of both the resistance and T_P suggest that the electric field induced not only tuning of the carrier density but also rebalancing of the phase separation states. The change of the charge-ordered insulating phase fraction was estimated to be temperature dependent, and a maximum of 16% was achieved in the phase separation regime. This tuning effect was partially irreversible, which might be due to an oxygen vacancy migration that is driven by the huge applied electric field.

Key words: electric double-layer field effect, manganites, phase separation

中图分类号: (Field effect devices)

85.30.Tv

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

崔丽敏, 李洁, 张玉, 赵璐, 邓辉, 黄克强, 李贺康, 郑东宁. Tuning the phase separation in La_0.325Pr_0.3Ca_0.375MnO₃ using theelectric double-layer field effect[J]. 中国物理B, 2014, 23(9): 98501-098501.

Cui Li-Min (崔丽敏), Li Jie (李洁), Zhang Yu (张玉), Zhao Lu (赵璐), Deng Hui (邓辉), Huang Ke-Qiang (黄克强), Li He-Kang (李贺康), Zheng Dong-Ning (郑东宁). Tuning the phase separation in La_0.325Pr_0.3Ca_0.375MnO₃ using theelectric double-layer field effect[J]. Chin. Phys. B, 2014, 23(9): 98501-098501.

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Tuning the phase separation in La_0.325Pr_0.3Ca_0.375MnO₃ using theelectric double-layer field effect

Tuning the phase separation in La_0.325Pr_0.3Ca_0.375MnO₃ using theelectric double-layer field effect

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