Autor:	Malola, S., Häkkinen, H., Koskinen, P.
Rok vydání:	2008
Předmět:	Condensed Matter - Materials Science
Zdroj:	Appl. Phys. Lett. 94, 043106 (2009)
Druh dokumentu:	Working Paper
DOI:	10.1063/1.3075216
Popis:	We study the bonding and diffusion of Au in graphene vacancies using density-functional theory. Energetics show that Au adsorbs preferably to double vacancies, steadily in-plane with graphene. All diffusion barriers for the complex of Au in double vacancy are above 4 eV, whereas the barriers for larger vacancies are below 2 eV. Our results support the main results of a recent experiment [Gan et al., Small 4, 587 (2008)], but suggest that the observed diffusion mechanism is not thermally activated, but radiation-enhanced. Comment: 3 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0812.3751 Zobrazit plný text záznamu View this record from Arxiv