arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1704.01475cond-mat.mtrl-sci
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电子束感应电流对阻变TiO2的状态表征

Stateful characterization of resistive switching TiO2 with electron beam induced currents

Brian D. Hoskins, Gina C. Adam, Evgheni Strelcov, Nikolai Zhitenev, Andrei Kolmakov, Dmitri B. Strukov, Jabez J. McClelland

摘要:

金属氧化物电阻开关作为下一代神经形态网络中可能的人工突触越来越重要。尽管如此,仍然没有一套用于研究设备特性的工具。为此,我们证明了电子束感应电流测量作为一个强大的方法来监测发展的局部电阻开关在二氧化钛为基础的设备。通过将依赖于束能量的电子束感应电流与不同器件层中的能量吸收的蒙特卡罗模拟进行比较,可以解构灯丝图像形成的起源,并将其与开关的形态变化和状态相关联。通过澄清电子束感应电流显微镜的对比机制,它是可能的,以获得新的见解成比例的电阻开关现象,并观察周围的开关灯丝的电流泄漏区域的形成。此外,对称器件结构的分析揭示了传播偏振域。

英文摘要:

Metal oxide resistive switches are increasingly important as possible artificial synapses in next generation neuromorphic networks. Nevertheless, there is still no codified set of tools for studying properties of the devices. To this end, we demonstrate electron beam induced current measurements as a powerful method to monitor the development of local resistive switching in TiO2 based devices. By comparing beam-energy dependent electron beam induced currents with Monte Carlo simulations of the energy absorption in different device layers, it is possible to deconstruct the origins of filament image formation and relate this to both morphological changes and the state of the switch. By clarifying the contrast mechanisms in electron beam induced current microscopy it is possible to gain new insights into the scaling of the resistive switching phenomenon and observe the formation of a current leakage region around the switching filament. Additionally, analysis of symmetric device structures reveals propagating polarization domains.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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