论文标题
准钙化振动模式作为玻璃中有效的热载体
Quasilocalized Vibrational Modes as Efficient Heat Carriers in Glasses
论文作者
论文摘要
虽然已知柔软的准化振动模式填充了玻璃固体的低频光谱，但它们对热性能的贡献仍未完全阐明。我们在数值上表明，尽管它们在空间上定位性质，但这些模式与Delocalized的模式一样有效，并且可以在低温方案中对总热导率产生不可忽视的效果，尤其是对于T <0.05 TG而言，TG是TG，其中TG是玻璃过渡的温度。我们进一步证明，低频准定位模式与其他模式之间的相互一致性解释了这种高热交换性能。我们的发现最终提供了关于玻璃固体中低频准钙化模式的热传输行为的看法。
While soft quasilocalized vibrational modes are known to populate the low-frequency spectrum of glassy solids, their contribution to thermal properties is still not fully elucidated. We numerically show that, despite their spatially localized nature, these modes are as effective heat carriers as the delocalized ones and can contribute non-negligible to the total thermal conductivity in the low-temperature regime, especially for T < 0.05 Tg where Tg is the glass transition temperature. We further prove that the mutual coherence between the low-frequency quasilocalized modes and other modes explains this high thermal exchange performance. Our finding finally provides a perspective on the thermal transport behaviour of the low-frequency quasilocalized modes in glassy solids.
