Investigation of the Impact of High Temperatures on the Switching Kinetics of Redox‐Based Resistive Switching Cells using a High‐Speed Nanoheater,Advanced Electronic Materials

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Investigation of the Impact of High Temperatures on the Switching Kinetics of Redox‐Based Resistive Switching Cells using a High‐Speed Nanoheater
Advanced Electronic Materials ( IF 5.3 ) Pub Date : 2017-11-13 , DOI: 10.1002/aelm.201700294
Moritz von Witzleben ₁ , Karsten Fleck ₁ , Carsten Funck ₁ , Brigitte Baumkötter ₁ , Milena Zuric ₁ , Alexander Idt ₁ , Thomas Breuer ₂ , Rainer Waser _{1,

2} , Ulrich Böttger ₁ , Stephan Menzel ₂

Affiliation

Ionic transport greatly influences the switching kinetics of filamentary resistive switching memories and depends strongly on temperature and electric fields. To separate the impact of both parameters on the switching kinetics and to further deepen the understanding of the influence of local Joule heating, a nanometer‐sized heating structure is employed. It consists of a 100 nm wide Pt electrode which, due to Joule heating, serves as heating source upon an electrical stimulus. These self‐heating properties are underlined by a 3D finite elements simulation model, which confirms a temperature increase of almost 500 K. Experimental electrical pulse measurements indicate that for this temperature a steady state is achieved in less than 100 ns. By employing this heating structure, kinetic measurements of a Pt/Ta₂O₅/Ta cell are performed at different temperatures and reveal that significantly decreased SET times are obtained with increasing temperature. This effect is accompanied by an increasing slope of the current prior to the SET event. The experimental results are further confirmed by predictions of an analytical model based on ionic conduction.

中文翻译：

使用高速纳米加热器研究高温对基于氧化还原的电阻开关电池开关动力学的影响

离子传输极大地影响了丝状电阻式开关存储器的开关动力学，并且很大程度上取决于温度和电场。为了分离两个参数对切换动力学的影响并进一步加深对局部焦耳加热的影响的理解，采用了纳米尺寸的加热结构。它由一个100 nm宽的Pt电极组成，由于焦耳加热，它在电刺激下用作加热源。通过3D有限元模拟模型强调了这些自热特性，该模型确定了将近500 K的温度增加。实验电脉冲测量表明，在该温度下，稳定状态的发生时间不到100 ns。通过采用这种加热结构，可以对Pt / Ta ₂ O进行动力学测量₅ / Ta电池在不同温度下进行，结果表明随着温度升高，SET时间显着减少。这种影响伴随着SET事件之前电流的斜率增加。通过基于离子传导的分析模型的预测进一步证实了实验结果。

更新日期：2017-11-13

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