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Volumn 110, Issue 9, 2011, Pages

Valence force field-based Monte Carlo bond-rotation method for the determination of sp2-bonded carbon structures

Author keywords

[No Author keywords available]

Indexed keywords

CARBON STRUCTURES; COMPUTATIONAL APPROACH; DENSITY FUNCTIONAL THEORY CALCULATIONS; DIFFERENT SIZES; MONTE CARLO; RELATIVE STABILITIES; TOPOLOGICAL DEFECT; VALENCE FORCE; VALENCE FORCE FIELDS;

EID: 81355163355     PISSN: 00218979     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.3660383     Document Type: Article
Times cited : (13)

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    • For a single vacancy in graphene, for instance, removal of one C atom is followed by symmetry-lowering lattice relaxation that causes two neighboring atoms to form a weak covalent bond. The remaining unsaturated C atom protrudes out of plane, due in part to the repulsion between the unpaired and paired electrons. With penalty energy of about 2.6 eV per dangling bond, the VFF model tends to provide a good match with the calculated DFT vacancy formation energy; however, more sophisticated potential models are needed in order to accurately describe the nature of bond-coordination defects such as weak bond formation
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