Insights into Nanoscale Electrochemical Reduction in a Memristive Oxide: the Role of Three-Phase Boundaries
Insights into Nanoscale Electrochemical Reduction in a Memristive Oxide: the Role of Three-Phase Boundaries
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DOI：
10.1002/adfm.201304233
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发表时间：
2014-07-23
影响因子：
19
通讯作者：
Dittmann, Regina
中科院分区：
文献类型：
--
作者：
Lenser, Christian;Patt, Marten;Dittmann, Regina
忆阻氧化物中的纳米级电还原是未来非易失性存储器材料的高度相关领域。光发射电子显微镜是用来识别的导电丝，并将它们与顶部电极的结构特征，指示的三相边界（电极氧化物环境）的电化学还原的关键作用。基于模拟的温度分布，焦耳加热通过局部电流的电还原和形态变化的重要作用被证明。
The nanoscale electro-reduction in a memristive oxide is a highly relevant field for future non-volatile memory materials. Photoemission electron microscopy is used to identify the conducting filaments and correlate them to structural features of the top electrode that indicate a critical role of the three phase boundary (electrode-oxide-ambient) for the electro-chemical reduction. Based on simulated temperature profiles, the essential role of Joule heating through localized currents for electro-reduction and morphology changes is demonstrated.