Dynamic conductivity of an InAs two-dimensional electron gas measured using terahertz time-domain spectroscopy

被引：2
|
作者：
Lin, Yanzhang [1 ]
Yao, Haizi [1 ]
Ren, Zhiying [1 ]
Chen, Ying [1 ]
Wang, Xiangfeng [1 ,2 ]
机构：
[1] Fuzhou Univ, Sch Mech Engn & Automat, Fuzhou 350108, Peoples R China
[2] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77005 USA
来源：
OPTICAL MATERIALS | 2017年 / 69卷
关键词：
Two-dimensional electron gas; Terahertz time-domain spectroscopy; Drude model;
D O I：
10.1016/j.optmat.2017.04.026
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We utilized a coherent terahertz time-domain spectroscopy system to measure the dynamic conductivity of an InAs two-dimensional electron gas. Based on the theoretical transmission analysis, the real and imaginary parts of the complex conductivity of the sample were extracted from the transmitted terahertz time-domain waveforms. We also measured the sample at low temperatures and fitted the real and imaginary parts of the conductivity with the Drude model to extract its densities and mobilities. The dominant scattering mechanisms are discussed according to the temperature dependence of the extracted densities and mobilities. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：148 / 151
页数：4
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