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Lattice‐Contraction‐Induced Moiré Patterns in Direction‐Controlled Epitaxial Graphene on Cu(111)
Author(s) -
Lim Hyunseob,
Jung Jaehoon,
Yang Hyun Jin,
Kim Yousoo
Publication year - 2014
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201300080
Subject(s) - materials science , moiré pattern , graphene , condensed matter physics , epitaxy , lattice (music) , nanotechnology , optics , acoustics , physics , layer (electronics)
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.