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Designing Negative Differential Resistance Devices Based on Self-Heating

机译：基于自加热的负压差电阻器件设计

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There are a number of important emerging applications that would benefit from simple circuit elements that exhibit tunable current-controlled negative differential resistance (NDR). The advent of such devices would enable, for example, key components for threshold logic and neuromorphic computing such as threshold switches, periodic and chaotic oscillators, and small signal amplifiers. Circuit elements that provide NDR with modifiable electrical characteristics would also be useful for creating optimized selectors that enable addressing of individual memory cells in large resistance-based memory arrays. Currently, there are no simple, bipolar, two-terminal commercial devices that exhibit current-controlled NDR. This paper demonstrates that current-controlled NDR can, in principal, arise from any electrical conduction mechanism that depends superlinearly on temperature, and that in practice a broad spectrum of materials can be utilized to yield NDR. A model is presented that accurately predicts conditions under which NDR can be observed and guidelines are provided for choosing materials that result in desired electrical characteristics. This model accurately predicts the behavior of some existing structures and can be used to tailor future circuit elements for emerging applications. It may also explain the onset of a number of soft breakdown phenomena.
机译：有许多重要的新兴应用将受益于显示可调电流控制负差分电阻（NDR）的简单电路元件。这种设备的出现将使阈值逻辑和神经形态计算的关键组件成为可能，例如阈值开关，周期性和混沌振荡器以及小信号放大器。为NDR提供可修改的电气特性的电路元件也可用于创建优化的选择器，以使大型基于电阻的存储阵列中的单个存储单元能够寻址。当前，没有简单的双极性，两端子商业设备展示出电流控制的NDR。本文证明，电流控制的NDR原则上可以由任何与温度成线性关系的电传导机制产生，并且在实践中可以使用多种材料来产生NDR。提出了一个模型，该模型可以准确地预测可观察到NDR的条件，并提供了用于选择可产生所需电气特性的材料的指南。该模型可以准确地预测某些现有结构的行为，并可用于为新兴应用定制未来的电路元件。它也可以解释许多软击穿现象的发生。

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