Interaction of two symmetric monovacancy defects in graphene

doi:10.1088/1674-1056/28/4/046801

中国物理B ›› 2019, Vol. 28 ›› Issue (4): 46801-046801.doi: 10.1088/1674-1056/28/4/046801

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

Interaction of two symmetric monovacancy defects in graphene

Wen-Yan Xu(徐文焱), Li-Zhi Zhang(张礼智), Li Huang(黄立), Yan-De Que(阙炎德), Ye-Liang Wang(王业亮), Xiao Lin(林晓), Shi-Xuan Du(杜世萱)

1 Institute of Physics & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China;
2 Suzhou Saibao Calibration Technology Co., Ltd., No. 4, Baotong Road, Wuzhong District, Suzhou 215100, China

收稿日期:2019-01-24 修回日期:2019-02-03 出版日期:2019-04-05 发布日期:2019-04-05
通讯作者: Shi-Xuan Du E-mail:sxdu@iphy.ac.cn

Interaction of two symmetric monovacancy defects in graphene

Wen-Yan Xu(徐文焱)^1,2, Li-Zhi Zhang(张礼智)¹, Li Huang(黄立)¹, Yan-De Que(阙炎德)¹, Ye-Liang Wang(王业亮)¹, Xiao Lin(林晓)¹, Shi-Xuan Du(杜世萱)¹

1 Institute of Physics & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China;
2 Suzhou Saibao Calibration Technology Co., Ltd., No. 4, Baotong Road, Wuzhong District, Suzhou 215100, China

Received:2019-01-24 Revised:2019-02-03 Online:2019-04-05 Published:2019-04-05
Contact: Shi-Xuan Du E-mail:sxdu@iphy.ac.cn

摘要/Abstract

摘要：

We investigate the interactions between two symmetric monovacancy defects in graphene grown on Ru (0001) after silicon intercalation by combining first-principles calculations with scanning tunneling microscopy (STM). First-principles calculations based on free-standing graphene show that the interaction is weak and no scattering pattern is observed when the two vacancies are located in the same sublattice of graphene, no matter how close they are, except that they are next to each other. For the two vacancies in different sublattices of graphene, the interaction strongly influences the scattering and new patterns' emerge, which are determined by the distance between two vacancies. Further experiments on silicon intercalated graphene epitaxially grown on Ru (0001) shows that the experiment results are consistent with the simulated STM images based on free-standing graphene, suggesting that a single layer of silicon is good enough to decouple the strong interaction between graphene and the Ru (0001) substrate.

关键词: monovacancy defect, graphene, density functional theory, STM

Abstract:

Key words: monovacancy defect, graphene, density functional theory, STM

中图分类号: (Composition, segregation; defects and impurities)

68.35.Dv

73.22.Pr (Electronic structure of graphene) 68.37.Ef (Scanning tunneling microscopy (including chemistry induced with STM)) 71.15.-m (Methods of electronic structure calculations)

徐文焱, 张礼智, 黄立, 阙炎德, 王业亮, 林晓, 杜世萱. Interaction of two symmetric monovacancy defects in graphene[J]. 中国物理B, 2019, 28(4): 46801-046801.

Wen-Yan Xu(徐文焱), Li-Zhi Zhang(张礼智), Li Huang(黄立), Yan-De Que(阙炎德), Ye-Liang Wang(王业亮), Xiao Lin(林晓), Shi-Xuan Du(杜世萱). Interaction of two symmetric monovacancy defects in graphene[J]. Chin. Phys. B, 2019, 28(4): 46801-046801.

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Interaction of two symmetric monovacancy defects in graphene

Interaction of two symmetric monovacancy defects in graphene

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