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One-dimensional (1D) graphene superlattices were formed on a prototypical high index surface-Cu(410)-O. Atomic hydrogen adsorption on the superlattice was studied by using Raman spectroscopy, low-energy electron diffraction (LEED) and scanning tunneling microscopy (STM). Selective H adsorption due to the 1D modulation from the Cu substrate was observed in defect-free graphene area. Most H adatoms occupy the same positions in the 1D graphene superlattice stripes, as revealed by STM. This opens the possibility for further graphene property tuning through 1D superlattices. In addition to H monomers and dimers, a new type of trimer configuration was also observed.
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Keywords:
- STM /
- graphene /
- 1D superlattice /
- H adsorption
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[61] -
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[8] [9] Pan Y, Shi D X, Gao H J 2007 Chin. Phys. 16 3151
[10] Gan L, Luo Z T 2013 ACS Nano 7 9480
[11] [12] [13] Huang L, Xu W Y, Que Y D, Pan Y, Gao M, Pan L D, Guo H M, Wang Y L, Du S X, Gao H J 2012 Chin. Phys. B 21 088102
[14] Ouyang F P, Chen L J, Xiao J, Zhang H 2011 Chin. Phys. Lett. 28 047304
[15] [16] Ma L, Tan Z B, Tan C L, Liu G T, Yang C L, Lu L 2011 Acta Phys. Sin. 60 107302(in Chinese) [马丽, 谭振兵, 谭长玲, 刘广同, 杨昌黎, 吕力 2011 物理学报 60 107302]
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[22] Ke F, Yin X L, Tong N, Lin C F, Liu N, Zhao R G, Fu L, Liu Z F, Hu Z H 2014 Chin. Phys. B 23 116801
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[26] Robinson J T, Burgess J S, Junkermeier C E, Badescu S C, Reinecke T L, Perkins F K, Zalalutdniov M K, Baldwin J W, Culbertson J C, Sheehan P E, Snow E S 2010 Nano Lett. 10 3001
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[52] [53] Lin C F, Huang X Q, Ke F, Jin C H, Tong N, Yin X L, Gan L, Guo X F, Zhao R G, Yang W S, Wang E G, Hu Z H 2014 Phys. Rev. B 89 085416
[54] [55] Canado L G, Jorio A, Ferreira E H M, Stavale F, Achete C A, Capaz R B, Moutinho M V O, Lombardo A, Kulmala T S, Ferrari A C 2011 Nano Lett. 11 3190
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[58] Hornekr L, Xu W, Otero R, Lgsgaard E, Besenbacher F 2007 Chem. Phys. Lett. 446 237
[59] [60] Sofo J O, Chaudhari A S, Barber G D 2007 Phys. Rev. B 75 153401
[61]
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