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在a-InOx和颗粒中,电子玻璃动态的异常热激活

T Grenet¹, J Delahaye¹

¹Université Grenoble Alpes, CNRS, Grenoble INP, Institut Néel, F-38000 Grenoble, France.

Journal of physics. Condensed matter : an Institute of Physics journal

|July 11, 2025

概括

在无形氧化物 (a-InO_x) 和颗粒膜中的电玻璃动态被热激活,挑战了先前的信念. 在电子眼镜中观察到的这种行为显示出异常的激活能量依赖温度.

科学领域:

凝聚物质物理学凝聚物质物理学
材料科学是一种材料科学.
无序的系统是一个无序的系统.

背景情况:

在无形氧化 (a-InO_x) 和颗粒 (Al) 薄膜中的电玻璃动力学知之甚少.
之前的研究表明,非热激活过程在低温下主导这些系统.

研究的目的:

研究a-InO_x和颗粒型Al膜中电玻璃动态的温度依赖性.
挑战这些材料中电荷传输的热激活现有范式.

主要方法:

使用非异热门电压协议来探测温度范围内的动态.
分析了对数松,以确定特征性的时间尺度和激活机制.

主要成果:

证明a-InO_x膜中的电玻璃动力学是热激活的,这与众所周知的观点相反.
观察到a-InO_x和颗粒状Al膜之间的动态非常相似,高达40K.
在两个系统中都发现了一个异常的,T²-依赖的有效激活能量,其来源仍然无法解释.

结论:

这些发现确立了热激活是a-InO_x中电玻璃动态的关键机制,使其与其他无序系统 (如颗粒型Al.
激活能量的异常温度依赖性表明电子眼镜中的新奇物理学需要进一步研究.

关键词:

无序的绝缘体无序的绝缘体电子玻璃玻璃的电子玻璃.现场效应 - 现场效应

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