Transport properties of corrugated graphene nanoribbons

被引：30

作者：

Yu, Zhizhou ^{[1
]}

Sun, L. Z. ^{[1
]}

Zhang, C. X. ^{[1
]}

Zhong, J. X. ^{[1
]}

机构：

[1] Xiangtan Univ, Lab Quantum Engn & Micronano Energy Technol, Xiangtan 411105, Hunan, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 17期

基金：

中国国家自然科学基金;

关键词：

density functional theory; graphene; Green's function methods; nanostructured materials; transport processes; ENERGY;

D O I：

10.1063/1.3419821

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The transport properties of the devices made by corrugated graphene nanoribbons were investigated using the density functional theory in combination with the nonequilibrium Green's function method. We find that the transport properties of the zigzag graphene nanoribbons (ZGNRs) with arched corrugation are similar to the flat one, while the transmission of the ZGNRs with step-shaped corrugation is greatly depressed. As for the armchair graphene nanoribbons (AGNRs), arched corrugation enlarges the transmission gap and the threshold voltage of the device. Moreover, the open currents of AGNRs are significantly depressed by both stepped and arched corrugation.

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