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Negative differential resistance behaviour in N-doped crossed graphene nanoribbons

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成果类型:
期刊论文
作者:
Chen Ling-Na;Ma Song-Shan;Ouyang Fang-Ping;Wu Xiao-Zan;Xiao Jin;...
通讯作者:
Xu Hui
作者机构:
[Xu Hui; Ouyang Fang-Ping; Ma Song-Shan; Chen Ling-Na; Xiao Jin; Wu Xiao-Zan] Cent S Univ, Sch Phys Sci & Technol, Changsha 410083, Hunan, Peoples R China.
[Chen Ling-Na] Univ S China, Sch Comp Sci & Technol, Hengyang 421001, Peoples R China.
通讯机构:
[Xu Hui] C
Cent S Univ, Sch Phys Sci & Technol, Changsha 410083, Hunan, Peoples R China.
语种:
英文
关键词:
transport properties;negative differential resistance;first-principles;crossed graphene nanoribbons
关键词(中文):
负微分电阻;掺杂石墨;纳米带;带交叉;行为;第一性原理计算;格林函数方法;电子输运特性
期刊:
中国物理B
ISSN:
1674-1056
年:
2010
卷:
19
期:
9
页码:
097301-1-097301-5
基金类别:
National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [10325415, 50504017]; Natural Science Foundation of Hunan Province, ChinaNatural Science Foundation of Hunan Province [07JJ3102]; Science Develop Foundation of Central South University, China [08SDF02, 09SDF09]
机构署名:
本校为其他机构
院系归属:
计算机科学与技术学院
摘要:
By using first-principles calculations and nonequilibrium Green's function technique, we study elastic transport properties of crossed graphene nanoribbons. The results show that the electronic transport properties of molecular junctions can be modulated by doped atoms. Negative differential resistance (NDR) behaviour can be observed in a certain bias region, when crossed graphene nanoribbons are doped with nitrogen atoms at the shoulder, but it cannot be observed for pristine crossed graphene nanoribbons at low biases. A mechanism for the nega...

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