Trap-controlled space-charge-limited current mechanism in resistance switching at Al/Pr0.7Ca0.3MnO3 interface
Trap-controlled space-charge-limited current mechanism in resistance switching at Al/Pr0.7Ca0.3MnO3 interface
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DOI：
10.1063/1.2938049
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发表时间：
2008-06-02
影响因子：
4
通讯作者：
Oshima, M.
中科院分区：
文献类型：
--
作者：
Harada, T.;Ohkubo, I.;Oshima, M.
在LaAlO(3)(100)衬底上制备了由外延Pr(0.7)Ca(0.3)MnO(3)绝缘体层、外延LaNiO(3)底部电极和Al金属顶部电极组成的明确的金属-绝缘体-金属三层结构。三层结构的 I-V 特性显示出电场引起的电阻切换。当施加正负脉冲电压时，异质结构的电阻转换比高达100。详细的 I-V 分析表明，陷阱控制的空间电荷限制电流和 Poole-Frenkel 效应在 Al/Pr(0.7)Ca(0.3)MnO(3) 界面电阻切换中的重要性。 (C) 2008 年美国物理研究所。
Well-defined metal-insulator-metal trilayered structures composed of epitaxial Pr(0.7)Ca(0.3)MnO(3) insulator layers, epitaxial LaNiO(3) bottom electrodes, and Al metal top electrodes were fabricated on LaAlO(3) (100) substrates. The I-V characteristics of the trilayer structures show electric-field-induced resistance switching. The resistance switching ratio of the heterostructures was up to 100 when positive and negative pulsed voltages were applied. Detailed I-V analysis indicates the importance of both trap-controlled space-charge-limited current and Poole-Frenkel effect in resistance switching at Al/Pr(0.7)Ca(0.3)MnO(3) interfaces. (C) 2008 American Institute of Physics.