| 钙钛矿结构Pr1－xCaxMnO3薄膜中电脉冲诱导电阻值变化的理论研究 |
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| 引用本文： | 李 倩,王之国,刘 甦,邢钟文,刘 楣.钙钛矿结构Pr1－xCaxMnO3薄膜中电脉冲诱导电阻值变化的理论研究[J].物理学报,2007,56(3):1637-1642. |
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| 作者姓名： | 李 倩 王之国 刘 甦 邢钟文 刘 楣 |
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| 作者单位： | (1)东南大学物理系，南京 210096; (2)东南大学物理系，南京 210096;淮阴师范学院物理系，淮阴 223001; (3)休斯敦大学物理系,休斯敦,TX77204 美国 |
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| 基金项目： | 国家自然科学基金(批准号：10574021)资助的课题. |
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| 摘 要： | 建立一个有效的三明治隧穿模型研究在Pr1-xCaxMnO3薄膜中电流脉冲引起的电阻改变(EPIR)性质，发现载流子在三明治结构各区域间的隧穿概率以及在不均匀界面层的导通概率对材料的EPIR值产生重要影响.还研究了电流-电压曲线中的迟滞效应，得到的结果与近年来的文献报道一致.
关键词：
强关联电子系统
金属-氧化物界面
隧穿
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| 关 键 词： | 强关联电子系统 金属-氧化物界面 隧穿 |
| 文章编号： | 1000-3290/2007/56(03)/1637-06 |
| 收稿时间： | 2006-06-23 |
| 修稿时间： | 06 23 2006 12:00AM |
Theoretical study on electric-pulse-induced resistance change in perovskite Pr1-x, Cax MnO3 films |
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| Li Qian,Wang Zhi-Guo,Liu Su,Xing Zhong-Wen and Liu Mei.Theoretical study on electric-pulse-induced resistance change in perovskite Pr1-x, Cax MnO3 films[J].Acta Physica Sinica,2007,56(3):1637-1642. |
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| Authors: | Li Qian Wang Zhi-Guo Liu Su Xing Zhong-Wen and Liu Mei |
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| Institution: | 1. Department of Physics, Southeast University, Nanjing 210096, China ; 2. Department of Physics, Huaiyin Teachers College, Huaiyin 223001, China; 3. Department of Physics , University of Houston, Houston, Texas 77204, USA |
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| Abstract: | We developed a effective tunneling model to study the electric-pulse-induced resistive switching (EPIR) effect in PCMO films, and find that the tunneling probability of the charge transport at interfaces plays an important role in the EPIR effect. We also study the nonvolatile characteristics and the hysteretic current-voltage curve in the PCMO films, the calculated results consistent with the recent experimental data. This electric-pulse- induced resistive switching effect at room temperate has excellent potential of application. |
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| Keywords: | strongly correlated electron systems metal-oxide interface tunneling |
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