Abstract
The stability of the B and N atomic vacancies and divacancies in an h-BN monolayer deformed by 2 and 4% along one of the axes has been investigated. It has been established that the N atomic vacancies are most stable; their concentration is insignificant and does not affect the properties of white graphene. The number of vacancies depends on the mobility of N and B atoms on the layer surface; therefore, the probability of recombination with the vacancies has been estimated. It has been revealed that the energy barrier for the migration of the B and N adatoms is about 0.23 and 1.23 eV, respectively. In view of such a low barrier for the B adatom, this type of adatoms will quite rapidly move over the surface and recombine with vacancies, in contrast to the N adatoms. Therefore, only nitrogen atom vacancies can exist in the h-BN monolayer grown by the methods, where the adatoms could possibly appear on the surface.
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Original Russian Text © A.A. Kuzubov, M.V. Serzhantova, A.S. Fedorov, F.N. Tomilin, T.A. Kozhevnikova, 2011, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2011, Vol. 93, No. 6, pp. 368–371.
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Kuzubov, A.A., Serzhantova, M.V., Fedorov, A.S. et al. Theoretical study of vacancies and adatoms in white graphene. Jetp Lett. 93, 335–338 (2011). https://doi.org/10.1134/S0021364011060051
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DOI: https://doi.org/10.1134/S0021364011060051