Terahertz transmission and sheet conductivity of randomly stacked multi-layer graphene

被引：39

作者：

Baek, I. H. ^{[1
,2
]}

Ahn, K. J. ^{[3
]}

Kang, B. J. ^{[1
,2
]}

Bae, S. ^{[4
]}

Hong, B. H. ^{[5
]}

Yeom, D. -I. ^{[1
,2
]}

Lee, K. ^{[6
]}

Jeong, Y. U. ^{[6
]}

Rotermund, F. ^{[1
,2
]}

机构：

[1] Ajou Univ, Dept Phys, Suwon 443749, South Korea

[2] Ajou Univ, Div Energy Syst Res, Suwon 443749, South Korea

[3] Seoul Natl Univ, Global Frontier Ctr Multiscale Energy Syst, Seoul 151747, South Korea

[4] Korea Inst Sci & Technol, Soft Innovat Mat Res Ctr, Jeonbuk 565905, South Korea

[5] Seoul Natl Univ, Dept Chem, Seoul 151747, South Korea

[6] Korea Atom Energy Res Inst, Ctr Quantum Beam Based Radiat Res, Taejon 305353, South Korea

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 19期

基金：

新加坡国家研究基金会;

关键词：

DEVICES; SPECTROSCOPY; TRANSISTORS; MODULATORS;

D O I：

10.1063/1.4805074

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigate transmission characteristics and sheet conductivity of mono- to multi-layer graphene deposited on quartz in the terahertz (THz) frequency region. The free carrier absorption and Fabry-Perot interference between graphene layers give rise to nonlinear decrease of THz transmission from 76.7% to 27% for mono- to 12-layer graphene. These phenomena are well explained with a modified theoretical model based on Drude conductivity. The optical sheet conductivity of multi-layer graphene, made by layer-by-layer random stacking of high-quality mono- layer graphene, at 1 THz exhibits two orders of magnitude higher values than the universal optical conductivity due to intraband transition of intrinsic graphene. (C) 2013 AIP Publishing LLC.

引用

页数：5

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