Thermodynamics of glasses:: a first principles computation

Thermodynamics of glasses:: a first principles computation
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DOI:
10.1088/0953-8984/11/10a/011
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发表时间:
1999-03-15
影响因子:
2.7
通讯作者:
Parisi, G
Parisi, G
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Mézard, M;Parisi, G

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从原子间相互作用势出发,提出了简单易碎玻璃热力学的第一性原理计算方法。一个复制品配方将这个问题转化为气体的相互作用的分子,每个分子是建立的m个原子,并有一个回转半径(有关笼的大小),在零温度下消失。我们使用一个小的笼展开,在低温下有效,这使我们能够计算笼的大小,比热(遵循杜隆-珀蒂定律)和构型熵。
We propose a first principles computation of the thermodynamics of simple fragile glasses starting from the two-body interatomic potential. A replica formulation translates this problem into that of a gas of interacting molecules, each molecule being build of m atoms, and having a gyration radius (related to the cage size) which vanishes at zero temperature. We use a small cage expansion, valid at low temperatures, which allows us to compute the cage size, the specific heat (which follows the Dulong-Petit law) and the configurational entropy.