Title :
The exchange-correlation potential correction to the vacuum potential barrier of graphene edge
Author :
Wang, Weiliang ; Shao, Junwen ; Li, Zhibing
Author_Institution :
Sch. of Phys. & Eng., Sun Yat-sen Univ., Guangzhou, China
Abstract :
We investigated the vacuum potential barriers of various graphene edges. It is found that the exchange-correlation potential correction is significant to the edge structures with electronegativity higher than carbon. The correction leads to the local work function decreased by more than 1 eV for the O terminated edge.
Keywords :
electron correlations; electronegativity; exchange interactions (electron); graphene; work function; C; carbon; edge structure; electronegativity; exchange correlation potential correction; graphene edge; vacuum potential barrier; work function; Educational institutions; Electric potential; Elementary particle vacuum; IEEE Potentials; Laboratories; Potential energy; Sun; exchange-correlation potential; graphene; local work function;
Conference_Titel :
Vacuum Electron Sources Conference (IVESC), 2012 IEEE Ninth International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4673-0368-2
DOI :
10.1109/IVESC.2012.6264182
