在二维和三维中,玻璃动态是否相同? 亚当·吉布斯关系测试的亚当·吉布斯关系测试
Santu Nath1,2, Shiladitya Sengupta1
1Department of Physics, Indian Institute of Technology Roorkee 247667, India.
The Journal of chemical physics
|July 16, 2024
概括
两维 (2D) 的玻璃动态不同于三维 (3D),超出了热波动. 亚当-吉布斯关系在2D中分解,即使经过校正,也表明玻璃形成的内在差异.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 统计力学 统计力学
背景情况:
- 二维 (2D) 无形材料由于Mermin-Wagner波动而表现出独特的行为,与它们的3D对应物不同.
- 空间维度对玻璃动态的基本性质的影响仍然是一个悬而未决的问题.
研究的目的:
- 为了调查二维和三维之间的玻璃动态的差异是否仅仅是由于热波动,或者是否涉及内在因素.
- 检查2D玻璃系统中亚当-吉布斯 (AG) 关系和随机第一顺序过渡 (RFOT) 理论的有效性.
主要方法:
- 使用亚当-吉布斯 (AG) 关系和RFOT理论研究了动力学和热力学之间的关系.
- 采用了潜在能量景观形式主义来计算配置,考虑到振动的无和性.
- 分析了两种玻璃形成液体模型,以评估维度对玻璃动态的影响.
主要成果:
- AG关系在2D中分解,即使考虑到长波长波动.
- 即使在对振动的无和性进行校正后,AG关系的分解仍然存在.
- 从AG关系的偏差取决于粒子间相互作用和所选择的时间尺度,影响RFOT缩放指数.
结论:
- 2D和3D之间的玻璃动态存在内在的差异,超出了长波长热波动的影响.
- 亚当-吉布斯关系和RFOT理论需要仔细考虑二维系统的维度和相互作用潜力.
- 需要进一步的研究,以充分阐明玻璃动态的维度依赖性.
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