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By using the first-principles method based on the density-functional theory, electrical and magnetic properties of graphene nanoribbons (GNRs) with the BN-chain doping are systematically studied. For the zigzag-edge graphene nanoribbon (ZGNR), its multispin-state properties: spin-unpolarized non-magnetism (NM) state, spin-polarized ferromagnetic (FM), and anti-ferromagnetic (AFM) states, are considered. The emphasis on our investigations is the effect of doping position for a single BN-chain. It is found that the BN-chain doping armchair-edge graphene nanoribbon (AGNR) has an increase in bandgap and becomes semiconductors with various different bandgaps upon the doping positions. When the ZGNR at the NM state is doped by the BN-chain, its metallic property is weakened, and the quasi-metallic property can also occur. The BN-chain doping ZGNR at the AFM state makes it change from a semiconductor to a metal or half-metal, depending on doping positions. And the BN-chain doping ZGNR at the FM state always keeps its metallic property unchanged regardless of the doping positions. These results indicate that the BN-chain doping can effectively modulate the electronic structure to form abundant electrical and magnetic properties for GNRs. It is of important significance for developing various kinds of nanodevices based on GNRs.
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Keywords:
- graphene nanoribbon /
- BN-chain doping /
- electronic transport /
- spin polarization
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[1] Noveselov K S, Geim A K, Morozov S V, Jiang D, Zhang Y, Dubonosn S V, Grigorieva I V, Firsov A A 2004 Science 306 666
[2] Hu H X, Zhang Z H, Liu X H, Qiu M, Ding K H 2009 Acta Phys. Sin. 58 7156 (in Chinese) [胡海鑫, 张振华, 刘新海, 邱明, 丁开和 2009 物理学报 58 7156]
[3] Han M, Zhang Y, Zheng H B 2010 Chin. Phys. Lett. 27 037302
[4] Ouyang F P, Chen L J, Xiao J, Zhang H 2011 Chin. Phys. Lett. 28 047304
[5] Wang X M, Liu H 2011 Acta Phys. Sin. 60 047102 (in Chinese) [王雪梅, 刘红 2011 物理学报 60 047102]
[6] Oswald W, Wu Z G 2012 Phys. Rev. B 85 115431
[7] Lin Q, Chen Y H, Wu J B, Kong Z M 2011 Acta Phys. Sin. 60 097103 (in Chinese) [林琦, 陈余行, 吴建宝, 孔宗敏 2011 物理学报 60 097103]
[8] Faccion R, Werner L F, Pardo H, Goyenola C, Ventura O N, Mombru A W 2010 J. Phys. Chem. C 114 18961
[9] Fang Z Q, Xie F 2012 Acta Phys. Sin. 61 077303 (in Chinese) [范志强, 谢芳 2012 物理学报 61 077303]
[10] Liu Z M, Zhu Y, Yang Z Q 2011 J. Chem. Phys. 134 074708
[11] Xiao J, Yang Z X, Xie W T, Xiao L X, Xu H, Ouyang F P 2012 Chin. Phys. B 21 027102
[12] Xiao H P, Chen Y P, Xie Y E, Ouyang T, Zhang Y, Zhong J X 2012 J. Appl. Phys. 122 113713
[13] Tang G P, Zhou J C, Deng X Q, Fan Z Q 2012 Appl. Phys. Lett. 101 023104
[14] Ni Z Y, Liu Q H, Tang K C, Zhen J X, Zhou J, Qin R, Gao Z X, Yu D P, Lu J 2012 Nano Lett. 12 113
[15] Kan E J, Li Z Y, Yang J L, Hou J G 2007 Appl. Phys. Lett. 91 234116
[16] Ozcelik V O, Ciraci S 2012 Phys. Rev. B 86 155421
[17] Liang G, Neophytou N, Lundstrom M S, Nikonov D E 2007 IEEE Trans. Electron Dev. 54 4
[18] Mao J H, Zhang H G, Liu Q, Shi D X, Gao H J 2009 Physics 38 378 (in Chinese) [毛金海, 张海刚, 刘奇, 时东霞, 高鸿钧 2009 物理 38 378]
[19] Jin C, Lin F, Suenaga K, Iijima S 2009 Phys. Rev. Lett. 102 195505
[20] Han W Q, Wu L, Zhu Y, Watanabe K, Taniguchi T 2008 Appl. Phys. Lett. 93 223103
[21] Du A J, Smith S C, Lu G Q 2007 Chem. Phys. Lett. 447 181
[22] Wang D J 2013 Acta Phys. Sin. 62 057302 (in Chinese) [王道俊 2013 物理学报 62 057302]
[23] Ci L J, Jin C H, Jariwala D, Wu D X, Li Y J, Srivastava A, Wang Z F, Storr K, Balicas L, Liu F, Ajayan P M 2010 Nature Mater. 9 430
[24] Chen X F, Lian J S, Jiang Q 2012 Phys. Rev. B 86 125437
[25] He J, Chen K Q, Fan Z Q, Tang L M, Hu W P 2010 Appl. Phys. Lett. 97 193305
[26] Dong J C, Li H 2012 J. Phys. Chem. C 116 17259
[27] Qiu M, Liew K M 2013 J. Appl. Phys. 113 054305
[28] Xiao H P, Chen Y P, Xie Y E, Ouyang T, Zhang Y, Zhong J X 2012 J. Appl. Phys. 112 113713
[29] Taylor J, Guo H, Wang 2001 J. Phys. Rev. B 63 245407
[30] Brandbyge M, Mozos J L, Ordejon P, Taylor J, Stokbro K 2002 Phys. Rev. B 65 165401
[31] Zeng J, Chen K Q 2012 Chem. Phys. 14 8032
[32] Li Z Y, Qian H Y, Wu J, Gu B L, Duan W H 2008 Phys. Rev. Lett. 100 206802.
[33] Zheng X H, Lan J, Wang X L, Huang L F, Hao H, Zeng Z 2012 Appl. Phys. Lett. 101 053101
[34] Zheng H X, Duley W 2008 Phys. Rev. B 78 045421
[35] Wang Y, Huang Y, Song Y, Zhang X, Ma Y, Liang J, Chen Y, 2009 Nano Lett. 9 220
[36] Rojas F M, Rossier J F, Palacios J J 2009 Phys. Rev. Lett. 102 136810
[37] Son Y W, Cohen M L, Louie S G 2006 Nature 444 347
[38] Sepioni M, Nair R R, Rablen S, Narayanan J, Tuna F, Winpenny R, Geim A K, Grigorieva I V 2010 Phys. Rev. Lett. 105 207205
[39] Mermin N D, Wagner H 1966 Phys. Rev. Lett. 17 1133
[40] Areshkin D A, White C T 2007 Nano Lett. 7 3253
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