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Title: Tight-binding calculation studies of vacancy and adatom defects in graphene

Journal Article · · Journal of Physics. Condensed Matter
 [1];  [2];  [3];  [4];  [4]
  1. Jilin Univ., Changchun (China); Ames Lab. and Iowa State Univ., Ames, IA (United States)
  2. Jilin Univ., Changchun (China); Qingdao Univ., Qingdao (China)
  3. Jilin Univ., Changchun (China)
  4. 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
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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Enhanced paramagnetism of mesoscopic graphdiyne by doping with nitrogen journal September 2017

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