Electric current-induced giant electroresistance in La0.36Pr0.265Ca0.375MnO3 thin films
The electroresistance（ER） of La_（0.36）Pr_（0.265）Ca_（0.375）MnO_3（LPCMO） epitaxial thin film was studied under various dc currents.The current effect was compared for the unpatterned film and patterned microbridge with a width of 50 μm.The value of ER in the unpatterned LPCMO film could reach 0.54 und...
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| Published in | 中国物理B：英文版 Vol. 26; no. 4; pp. 377 - 382 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.04.2017
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-1056 2058-3834 |
| DOI | 10.1088/1674-1056/26/4/047103 |
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| Summary: | The electroresistance（ER） of La_（0.36）Pr_（0.265）Ca_（0.375）MnO_3（LPCMO） epitaxial thin film was studied under various dc currents.The current effect was compared for the unpatterned film and patterned microbridge with a width of 50 μm.The value of ER in the unpatterned LPCMO film could reach 0.54 under a 1-mA current,which is much higher than ER under 1 mA for the patterned weak phase-separated La_（0.67）Ca_（0.33）MnO_3 and La_（0.85）Sr_（0.15）MnO_3 microbridges with 50-μm width.More interestingly,for the patterned LPCMO microbridge,the maximum of ER can reach 0.6 under a small current of 100 μ.A.The results were explained by considering the coexistence of ferromagnetic metallic phase with the charge-ordered phase,and the variation of the phase separation with electric current. |
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| Bibliography: | The electroresistance（ER） of La_（0.36）Pr_（0.265）Ca_（0.375）MnO_3（LPCMO） epitaxial thin film was studied under various dc currents.The current effect was compared for the unpatterned film and patterned microbridge with a width of 50 μm.The value of ER in the unpatterned LPCMO film could reach 0.54 under a 1-mA current,which is much higher than ER under 1 mA for the patterned weak phase-separated La_（0.67）Ca_（0.33）MnO_3 and La_（0.85）Sr_（0.15）MnO_3 microbridges with 50-μm width.More interestingly,for the patterned LPCMO microbridge,the maximum of ER can reach 0.6 under a small current of 100 μ.A.The results were explained by considering the coexistence of ferromagnetic metallic phase with the charge-ordered phase,and the variation of the phase separation with electric current. Yinghui Sun1, Yonggang Zhao2,3, and Rongming Wang1（ 1Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China 2Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China 3 Collaborative Innovation Center of Quantum Matter, Beijing 100084, China） 11-5639/O4 manganites, electroresistance, phase separation, percolation |
| ISSN: | 1674-1056 2058-3834 |
| DOI: | 10.1088/1674-1056/26/4/047103 |