arxiv: 1102.5258 · v1 · pith:WOSX7EWTnew · submitted 2011-02-25 · ❄️ cond-mat.mes-hall · cond-mat.mtrl-sci

The catalytic potential of high-k dielectrics for graphene formation

Andrew Scott , Arezoo Dianat , Felix B\"orrnert , Alicja Bachmatiuk , Shasha Zhang , Jamie H. Warner , Ewa Borowiak-Palen , Martin Knupfer

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Bernd B\"uchner Gianaurelio Cuniberti Mark H. R\"ummeli

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classification ❄️ cond-mat.mes-hall cond-mat.mtrl-sci

keywords graphenegrowthnano-flakesstepadsorptionanchoredc2h2carbon

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The growth of single and multilayer graphene nano-flakes on MgO and ZrO2 at low temperatures is shown through transmission electron microscopy. The graphene nano-flakes are ubiquitously anchored at step edges on MgO (100) surfaces. Density functional theory investigations on MgO (100) indicate C2H2 decomposition and carbon adsorption at step-edges. Hence, both the experimental and theoretical data highlight the importance of step sites for graphene growth on MgO.

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The catalytic potential of high-k dielectrics for graphene formation

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