Interlayer interactions in graphites.

Interlayer interactions in graphites.
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石墨中的层间相互作用

DOI:
10.1038/srep03046
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发表时间:
2013-11-06
期刊:
影响因子:
4.6
通讯作者:
Chen, Nan-xian
Chen, Nan-xian
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Chen, Xiaobin;Tian, Fuyang;Persson, Clas;Duan, Wenhui;Chen, Nan-xian

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基于 ABC 和 AB 堆叠石墨的从头计算,使用改进的莫比乌斯反演方法获得了作为层间距函数的层间电势(即石墨烯-石墨烯相互作用),并用于计算石墨的基本物理性质。 AB 堆叠石墨的计算声子色散与实验结果具有良好的一致性,表明了层间电势的有效性。更重要的是,非理想结构的层相关特性(例如剥离能、解理能、堆垛层错能、表面能等)可以很容易地从层间势预测出来,这对于研究范德华结构非常有效和有帮助。
Based on ab initio calculations of both the ABC- and AB-stacked graphites, interlayer potentials (i.e., graphene-graphene interaction) are obtained as a function of the interlayer spacing using a modified Möbius inversion method, and are used to calculate basic physical properties of graphite. Excellent consistency is observed between the calculated and experimental phonon dispersions of AB-stacked graphite, showing the validity of the interlayer potentials. More importantly, layer-related properties for nonideal structures (e.g., the exfoliation energy, cleave energy, stacking fault energy, surface energy, etc.) can be easily predicted from the interlayer potentials, which promise to be extremely efficient and helpful in studying van der Waals structures.
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