红外与毫米波学报2011，Vol.30Issue(6)：486-489,510,5.
GaAs/AlGaAs异质结的微波调制反射谱
Microwave-modulated reflectance spectroscopy in the GaAs/AlGaAs heterostructure
摘要
Abstract
A microwave-modulated reflectance spectroscopy (MMRS) measurement system was constructed.This MMRS technique was used to identify a transition from holes in valence band to electrons in the ground subband (GS) of the twodimensional electron system (2DES) formed in a GaAs/AlGaAs heterostructure sample.The temperature (T) dependence of the MMRS shows a blue shift of the energy gap with increasing T,while the magnetic field (B) dependence of the MMRS shows a red shift of the energy gap with increasing B.Both phenomena are attributed to the band-filling effect of holes in valence band in the GaAs/AlGaAs heterostructure.A theoretical simulation based on Kramers-Kronig relation was also presented which was similar with the experimental data.关键词
微波调制反射谱/二维电子系统Key words
microwave-modulated reflectance spectroscopy/two-dimensional electron system分类
数理科学引用本文复制引用
钱轩,谷晓芳,姬扬..GaAs/AlGaAs异质结的微波调制反射谱[J].红外与毫米波学报,2011,30(6):486-489,510,5.基金项目
National Nature Science Foundation(10674129) （10674129）
National Basic Research Program(2009CB929301) （2009CB929301）
