Lattice‐Contraction‐Induced Moiré Patterns in Direction‐Controlled Epitaxial Graphene on Cu(111)

Abstract

Contrary to the general understanding, direction controlled epitaxial graphenes with an identical rotational angle (R θ = R0ˆ) is reported. Despite the identical Rθ, various Moire patterns with different periodicity are observed, which cannot be understood by conventional Rθ dependence. A new method is suggested for practical analysis, in which degree of lattice contraction of EG results in the various Moire superstructures.