Electron transport of L-shaped graphene nanoribbons

被引：57

作者：

Chen, Yuan Ping ^{[1
,2
]}

Xie, Yue E. ^{[1
,2
]}

Yan, Xiao Hong ^{[3
]}

机构：

[1] Xiangtan Univ, Inst Modern Phys, Xiangtan 411105, Peoples R China

[2] Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China

[3] Nanjing Univ Aeronaut & Astronaut, Coll Sci, Nanjing 210016, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 103卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Nanostructured materials;

D O I：

10.1063/1.2894910

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

L-shaped graphene nanoribbons (LGNRs) are important components of nanoelectronics and nanocircuits. By using the Green's function method, we study the transport properties of LGNRs, which consist of a semi-infinite armchair edged nanoribbon (AGNR) and a semi-infinite zigzag edged nanoribbon (ZGNR). The width of AGNR determines whether the LGNR is metallic or not. The LGNR with a small included angle has high reflectance to the electrons, while the LGNR with a large included angle is nearly reflectionless. These are opposite to the transport characteristics of the LGNRs, which consist of two semi-infinite ZGNRs. As to the right-angle LGNR, its transport properties are associated with the width of ZGNR. The increase of width will decrease the conductance around the Fermi energy and simultaneously induce sharp conductance dips. In addition, an interesting spatially resolved local density of state is found in the right-angle LGNR. (C) 2008 American Institute of Physics.

引用

页数：4

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