Gold-embedded zigzag graphene nanoribbons as spin gapless semiconductors

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	Gold-embedded zigzag graphene nanoribbons as spin gapless semiconductors
	Hu, XH ; Zhang, W(张伟) ; Sun, LT ; Krasheninnikov, AV
刊名	PHYSICAL REVIEW B
	2012
卷号	86 期号:19
ISSN号	1098-0121
英文摘要	Using density-functional theory calculations, we studied the electronic and magnetic properties of zigzag graphene nanoribbons (ZGNRs) with gold (Au) atoms embedded into different sites of the ZGNRs. Strong site dependence was found, and the system had the ferromagnetic or antiferromagnetic ground state depending on the Au atom position. Spin gapless semiconductor (SGS) behavior was observed when the Au atom was embedded into the center and edge sites of the ZGNRs. The simulations showed that the electronic structure of the ribbon strongly depends on ZGNR width, but the SGS behavior is always present when the Au atom is embedded into the center and edge sites. The SGS properties were also found to be dependent on impurity atom concentration, so that they can be tuned by either selecting the proper positions of Au atoms or changing their concentration. Our results suggest a flexible way of designing SGSs, which could be used in various spintronic, electronic, and optoelectronic applications.
语种	英语
WOS记录号	WOS:000311139900006
公开日期	2013-12-05
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/13176]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Hu, XH,Zhang, W,Sun, LT,et al. Gold-embedded zigzag graphene nanoribbons as spin gapless semiconductors[J]. PHYSICAL REVIEW B,2012,86(19).
APA	Hu, XH,Zhang, W,Sun, LT,&Krasheninnikov, AV.(2012).Gold-embedded zigzag graphene nanoribbons as spin gapless semiconductors.PHYSICAL REVIEW B,86(19).
MLA	Hu, XH,et al."Gold-embedded zigzag graphene nanoribbons as spin gapless semiconductors".PHYSICAL REVIEW B 86.19(2012).