Tight-binding calculation studies of vacancy and adatom defects in graphene
- Jilin Univ., Changchun (China); Ames Lab. and Iowa State Univ., Ames, IA (United States)
- Jilin Univ., Changchun (China); Qingdao Univ., Qingdao (China)
- Jilin Univ., Changchun (China)
- Ames Lab. and Iowa State Univ., Ames, IA (United States)
Computational studies of complex defects in graphene usually need to deal with a larger number of atoms than the current first-principles methods can handle. We show a recently developed three-center tight-binding potential for carbon is very efficient for large scale atomistic simulations and can accurately describe the structures and energies of various defects in graphene. Using the three-center tight-binding potential, we have systematically studied the stable structures and formation energies of vacancy and embedded-atom defects of various sizes up to 4 vacancies and 4 embedded atoms in graphene. In conclusion, our calculations reveal low-energy defect structures and provide a more comprehensive understanding of the structures and stability of defects in graphene.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-07CH11358; 21173096; 201406175053; 2013CB834801
- OSTI ID:
- 1249343
- Report Number(s):
- IS-J-8954
- Journal Information:
- Journal of Physics. Condensed Matter, Vol. 28, Issue 11; ISSN 0953-8984
- Publisher:
- IOP PublishingCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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