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首页> 外文期刊>Physica, B. Condensed Matter >Electrical glassy behavior in granular aluminium thin films
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Electrical glassy behavior in granular aluminium thin films

机译:颗粒状铝薄膜的电玻璃态行为

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摘要

We present new results obtained by field effect measurements on insulating granular Al thin films. First, reproducible and stable conductance fluctuations are seen in micron size samples as a function of gate voltage. The anomalous field effect and its slow relaxation already known to exist in macroscopic samples are shown to still exist in small samples and to have no influence on the fluctuations pattern. Secondly, "true" aging is demonstrated, i.e. the anomalous field effect relaxation depends on the time elapsed since the cooling, the longer this time the longer it takes for the system to react to a gate voltage change. Interpretations and implications of these findings are discussed.
机译:我们提出了通过对绝缘颗粒状铝薄膜进行场效应测量获得的新结果。首先,在微米尺寸的样品中,可再现且稳定的电导波动是栅极电压的函数。已知在宏观样本中已经存在的异常场效应及其缓慢弛豫仍然存在于小样本中,并且对波动模式没有影响。其次,证明了“真实的”老化,即,异常场效应的松弛取决于自冷却以来经过的时间,该时间越长,系统对栅极电压变化作出反应所花费的时间越长。这些发现的解释和含义进行了讨论。

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