单极性电阻开关的大1/f噪声及其消除特性
Large 1/f noise of unipolar resistance switching and its percolating nature
摘要：
我们研究了单极性电阻开关的Pt/NiO/Pt电容器的1/f噪声。当它们从低电阻状态切换到高电阻状态时，电压波动的功率谱密度增加了大约五个数量级。在100 K时，低电阻状态下的相对电阻波动SR/R2与电阻R呈幂律关系，指数w = 1.6。这种行为可以用渗流理论来解释;然而，在较高的温度或接近开关电压时，SR/R2进一步增强。因此，这种大的1/f噪声可能是电阻随机存取存储器器件开发中的一个重要问题。
英文摘要：
We investigated the 1/f noise of Pt/NiO/Pt capacitors that show unipolar resistance switching. When they were switched from the low to high resistance states, the power spectral density of the voltage fluctuation was increased by approximately five orders of magnitude. At 100 K, the relative resistance fluctuation, SR/R2, in the low resistance state displayed a power law dependence on the resistance R with exponent w = 1.6. This behavior can be explained by percolation theory; however, at higher temperatures or near the switching voltage, SR/R2 becomes enhanced further. This large 1/f noise can be therefore an important problem in the development of resistance random access memory devices.
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