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説明:

Magnetism in graphene has been found to originate from various defects, e.g., vacancy, edge formation, add-atoms etc. Here, we discuss about an alternate route of achieving magnetism in graphene via grain boundary. During chemical vapor deposition of graphene, several graphene nucleation centers grow independently and face themselves with unusual bonding environment, giving rise to the formation of grain boundaries. We investigate the origin of magnetism in such grain boundaries within first-principles calculations, by letting two nucleation centers interact with each other at their interface. We observe formation of unprecedented point defect, consisting of fused three-membered and larger carbon rings, which induces net magnetization to graphene quantum dots. In case of periodic lattices,

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: graphene, grain boundary, magnetism, point defect, localized states, first-principles calculation, chemical vapor deposition

刊行年月日: 2015-07-06

出版者: Springer Science and Business Media LLC

掲載誌:

• Scientific Reports (ISSN: 20452322) vol. 5 issue. 1 11744

研究助成金:

• JSPS KAKENHI 25107001
• JSPS KAKENHI 25107005
• JSPS KAKENHI 15K13507

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1038/srep11744

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更新時刻: 2026-11-02 13:13:02 +0900

MDRでの公開時刻: 2026-11-02 14:36:39 +0900