Numerical Analysis of Alternating-Current Small-Signal Response in Graphene Nanoribbons

Alternating-current small-signal admittances of armchair graphene nanoribbons are investigated using the method of non-equilibrium Green＇s function. The calculated ac admittances show an oscillatory response between inductive and capacitive behaviors, which is a result of the finite length of the gr...

Full description

Saved in:
Bibliographic Details
Published inChinese physics letters Vol. 27; no. 8; pp. 172 - 175
Main Author 陈志东 张进宇 余志平
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.08.2010
Subjects
交流电流
信号响应
振荡行为
数值分析
有限长度
格林函数方法
纳米带
金属石墨
Online AccessGet full text
ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/27/8/087204

Cover

More Information
Summary:Alternating-current small-signal admittances of armchair graphene nanoribbons are investigated using the method of non-equilibrium Green＇s function. The calculated ac admittances show an oscillatory response between inductive and capacitive behaviors, which is a result of the finite length of the graphene nanoribbon. The effects of hydrogen-passivated edges on ac response are demonstrated. At low frequency, the edge effects transform the inductive behavior in a metallic graphene nanoribbon into a capacitive one. Finally, the effects of variations in the width and bandgap of a graphene nanoribbon on its dynamic response are investigated.
Bibliography:O241
11-1959/O4
U264.34
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/27/8/087204