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Determination of characteristic relaxation times and their significance in glassy Anderson insulators

机译:玻璃状安德森绝缘子特征弛豫时间的确定及其意义

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摘要

We revisit the field effect procedure used to characterize the slow dynamics of glassy Anderson insulators. It is shown that in the slowest systems, the procedure fails and the "characteristic" time values extracted are not intrinsic but rather determined by the experimental procedure itself. In other cases (like lightly doped indium oxide) qualitative indications about the dynamics might be obtained; however, the times extracted cannot be seen as characteristic relaxation times of the system in any simple manner, and more complete experiments are necessary. Implications regarding the effect of carrier concentration on the emergence of glassiness are briefly outlined.
机译:我们将重新研究用于表征玻璃状安德森绝缘子慢动力学的场效应程序。结果表明,在最慢的系统中,该过程失败,并且提取的“特征”时间值不是固有的,而是由实验过程本身确定的。在其他情况下(如轻度掺杂的氧化铟),可能会获得有关动力学的定性指示。但是,以任何简单的方式都不能将提取的时间视为系统的特征弛豫时间,因此必须进行更完整的实验。简要概述了载流子浓度对出现玻璃态的影响。

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