期刊
JOURNAL OF PHYSICS-CONDENSED MATTER
卷 23, 期 20, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/23/20/202202
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资金
- FOM-NWO, The Netherlands
The high temperature behaviour of graphene is studied by atomistic simulations based on an accurate interatomic potential for carbon. We find that clustering of Stone-Wales defects and formation of octagons are the first steps in the process of melting which proceeds via the formation of carbon chains. The molten state forms a three-dimensional network of entangled chains rather than a simple liquid. The melting temperature estimated from the two-dimensional Lindemann criterion and from extrapolation of our simulation for different heating rates is about 4900 K.
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