Temperature-dependent far-infrared response of epitaxial multilayer graphene

被引：5

作者：

Lao, Yan-Feng ^{[1
]}

Perera, A. G. Unil ^{[1
]}

Shepperd, Kristin ^{[2
]}

Wang, Feng ^{[2
]}

Conrad, Edward H. ^{[2
]}

Williams, Michael D. ^{[3
]}

机构：

[1] Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30303 USA

[2] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA

[3] Clark Atlanta Univ, Dept Phys, Atlanta, GA 30314 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 23期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.4810757

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The optical response of pristine and FeCl3-intercalated epitaxial graphene has been studied over the temperature range from 11K to 296 K. The far-infrared (FIR) Drude conductivity of pristine graphene rises with increasing temperature, opposite to the behavior of intercalated graphene. This is a result of intercalation-induced p-type doping compensating the intrinsic n-doping in epitaxial graphene. Temperature-dependent Drude parameters are obtained by fitting the FIR response. This study demonstrates the influence of temperature variation on the optical properties of graphene, which should be a vital factor to be considered for graphene-based device applications. (C) 2013 AIP Publishing LLC.

引用

页数：3

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