Evidence for a pressure-induced phase transition of few-layer graphene to 2D diamond
作者： Mário S.C. Mazzoni , Ronaldo J.C. Batista , Jing Kong , Riccardo Comin , Alan B. de Oliveira
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摘要: We unveil the diamondization mechanism of few-layer graphene compressed in the presence of water, providing robust evidence for the pressure-induced formation of 2D diamond. High-pressure Raman spectroscopy provides evidence of a phase transition occurring in the range of 4-7 GPa for 5-layer graphene and graphite. The pressure-induced phase is partially transparent and indents the silicon substrate. Our combined theoretical and experimental results indicate a gradual top-bottom diamondization mechanism …
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