Tuning the band gap and magnetic properties of BN sheets impregnated   with graphene flakes

doi:10.1103/PhysRevB.84.205412

CORC > 北京大学 > 工学院

	Tuning the band gap and magnetic properties of BN sheets impregnated with graphene flakes
	Kan, M. ; Zhou, J. ; Wang, Q. ; Sun, Q. ; Jena, P.
刊名	physical review b
	2011
关键词	BORON-NITRIDE BERRYS PHASE
DOI	10.1103/PhysRevB.84.205412
英文摘要	The BN sheet is a nonmagnetic wide-band-gap semiconductor. Using density functional theory, we show that these properties can be fundamentally altered by embedding graphene flakes. Not only do graphene flakes preserve the two-dimensional (2D) planar structure of the BN sheet, but by controlling their shape and size, unexpected electronic and magnetic properties also emerge. The electronic band structure can be tuned from a direct gap to an indirect gap, the energy gap can be further modulated by changing the bonding patterns, and both hole injecting or electron injecting can be achieved by tailoring the triangular embedding pattern. Furthermore, the Lieb theorem still holds, and the embedded triangular graphene flakes become ferromagnetic with full spin polarizations of the introduced electrons or holes, opening the door to their use as spin filters. The study sheds new light on hybrid single-atomic-layer engineering for unprecedented applications of 2D nanomaterials.; Physics, Condensed Matter; SCI(E); 31; ARTICLE; 20; 84
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/394115]
专题	工学院
推荐引用方式 GB/T 7714	Kan, M.,Zhou, J.,Wang, Q.,et al. Tuning the band gap and magnetic properties of BN sheets impregnated with graphene flakes[J]. physical review b,2011.
APA	Kan, M.,Zhou, J.,Wang, Q.,Sun, Q.,&Jena, P..(2011).Tuning the band gap and magnetic properties of BN sheets impregnated with graphene flakes.physical review b.
MLA	Kan, M.,et al."Tuning the band gap and magnetic properties of BN sheets impregnated with graphene flakes".physical review b (2011).