Evidence for an oxygen diffusion model for the electric pulse induced resistance change effect in transition-metal oxides
Evidence for an oxygen diffusion model for the electric pulse induced resistance change effect in transition-metal oxides
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DOI：
10.1103/physrevlett.98.146403
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发表时间：
2007-04-06
影响因子：
8.6
通讯作者：
Ignatiev, A.
中科院分区：
文献类型：
--
作者：
Nian, Y. B.;Strozier, J.;Ignatiev, A.
电脉冲引起的电阻滞后切换回线Pr0.7Ca0.3MnO3钙钛矿氧化物薄膜被发现表现出额外的尖锐的“梭尾”峰周围的负脉冲最大值的薄膜沉积在缺氧的环境。在时间的电阻弛豫的“穿梭尾”的峰值，以及在电阻滞后回线的过渡区的电阻弛豫显示在电脉冲下的氧扩散的证据，并支持建议的氧扩散模型与氧空位堆积在金属电极界面区域的过渡金属氧化物的非易失性电阻开关效应的活性过程。
Electric-pulse induced resistance hysteresis switching loops for Pr0.7Ca0.3MnO3 perovskite oxide films were found to exhibit an additional sharp "shuttle tail" peak around the negative pulse maximum for films deposited in an oxygen-deficient ambient. The resistance relaxation in time of this "shuttle tail" peak as well as resistance relaxation in the transition regions of the resistance hysteresis loop show evidence of oxygen diffusion under electric pulsing, and support a proposed oxygen diffusion model with oxygen vacancy pileup at the metal electrode interface region as the active process for the nonvolatile resistance switching effect in transition-metal oxides.