The Atomic-scale Growth of Large-Area Monolayer Graphene on Single-Crystal Copper Substrates

Details The Atomic-scale Growth of Large-Area Monolayer Graphene on Single-Crystal Copper Substrates The Atomic-scale Growth of Large-Area Monolayer Graphene on Single-Crystal Copper Substrates

2010-08-20

arxiv.org/abs/1008.3542v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We study the growth and microscopic structure of large-area graphene monolayers, grown on copper single crystals by chemical vapor deposition (CVD) in ultra-high vacuum (UHV). Using atomic-resolution scanning tunneling microscopy (STM), we find that graphene grows primarily in registry with the underlying copper lattice for both Cu(111) and Cu(100). The graphene has a hexagonal superstructure on Cu(111) with a significant electronic component, whereas it has a linear superstructure on Cu(100). The film quality is limited by grain boundaries, and the best growth is obtained on the Cu(111) surface.

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