玻璃造型器中的非线性介电反应:恢复力和避免了旋玻璃的临界性
Eric Bertin1, François Ladieu2
1<a href="https://ror.org/04px4e658">Univ. Grenoble Alpes</a>, CNRS, LIPhy, 38000 Grenoble, France.
Physical review. E
|July 18, 2024
概括
这项研究模拟了玻璃成型器中的非线性介电反应,揭示了对于理解结构玻璃至关重要的不同长度尺度. 这些发现突出了交互的"超双极"在捕捉实验行为中的作用.
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.
- 统计力学就是统计力学.
背景情况:
- 在玻璃制造器中测量非线性介电反应表明,随着温度的下降,热力学长度尺度不断增长.
- 一个小小的东西.
- 这是一个超二极管.
- 已经提出了具有无序相互作用的模型来解释结构玻璃中的实验观测.
研究的目的:
- 为了测试该测试器.
- 这是一个超二极管.
- 通过开发一个一维的旋转模型来证明这一假设,该模型包含了旋转玻璃动力学和缓慢合常量波动.
- 调查互动的旋转和无序相互作用在玻璃成形材料的非线性介电反应中的作用.
主要方法:
- 为合常量开发一维旋转模型,其中包含互动的旋转和缓慢的动态.
- 模拟频率依赖的第三阶非线性介电响应.
- 与非相互作用旋转的动力约束旋转模型 (KCSM) 进行比较.
主要成果:
- 交互自旋模型有质地复制了实验观察到的第三阶反应的形形状及其温度依赖.
- 具有非相互作用旋转的KCSM无法复制第三阶反应的凸形状.
- 提出了一个两种长度尺度的场景:动态异质长度和刚度长度,在交互模型中不同,但在KCSM中是相同的.
结论:
- 与非相互作用模型相比,交互自旋模型为理解玻璃成型器中的非线性介电反应提供了更好的框架.
- 动态异质性和刚性长度之间的区别对于解释结构玻璃的行为至关重要.
- 无序的相互作用和连贯的旋转翻转在观察到的现象中起着重要作用.
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