在静态玻璃中雪崩临界性由热涨落产生
Avalanche criticality emerges by thermal fluctuation in a quiescent glass
AI总结:
本文通过分子模拟发现快速淬火后玻璃系统热弛豫中存在雪崩临界性,指出粒子重排是临界的,且该现象与剪切非晶固体雪崩同源但指数不同,提出将玻璃视为热驱动弹塑性材料以理解玻璃转变点以下的老化等动力学。
摘要:
我们通过分子模拟报告了快速淬火后玻璃系统中热弛豫的雪崩临界性。我们对能量景观和标度的分析表明,粒子重排是临界的。该临界现象与剪切非晶固体中的雪崩具有相同起源,但临界指数与先前观察到的不同。我们的结果表明,通过将玻璃视为热驱动的弹塑性材料,我们可以理解玻璃转变点以下的动力学,例如老化。
英文摘要:
We report avalanche criticality of thermal relaxation in glassy systems after a rapid quench by molecular simulation. Our analysis of the energy landscape and the scaling reveals that particle rearrangement is critical. The critical phenomenon has the same origin as avalanches in sheared amorphous solids, but the critical exponent differs from previously observed. Our results suggest that by viewing a glass as a thermally driven elastoplastic material, we can understand dynamics below the glass transition point, such as aging.
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