| GaAs/AlGaAs异质结的微波调制反射谱 |
| |
| 引用本文： | 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. |
| |
| 作者姓名： | 钱轩 谷晓芳 姬扬 |
| |
| 作者单位： | 中国科学院半导体研究所超晶格国家重点实验室,北京,100083 |
| |
| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目）,国家重点基础研究发展计划（973计划） |
| |
| 摘 要： | 基于搭建的微波调制反射谱测量系统(MMRS),确定了GaAs/AlGaAs异质结构中价带空穴到二维电子系统(2DES)电子基态(GS)的跃迁.微波调制反射谱与温度的依赖关系表明,随着测量温度的升高,能带带隙发生了蓝移现象；而其与磁场的依赖关系表明,随着测量磁场的增大,能带带隙则发生了红移现象；它们均与GaAs/AlGa...
|
| 关 键 词： | 微波调制反射谱 二维电子系统 |
| 收稿时间： | 2010/12/27 0:00:00 |
| 修稿时间： | 2011/6/15 0:00:00 |
Microwave-modulated reflectance spectroscopy in a GaAs/AlGaAs heterostructure |
| |
| QIAN Xuan,GU Xiao-Fang and JI Yang.Microwave-modulated reflectance spectroscopy in a GaAs/AlGaAs heterostructure[J].Journal of Infrared and Millimeter Waves,2011,30(6):486-489. |
| |
| Authors: | QIAN Xuan GU Xiao-Fang and JI Yang |
| |
| Institution: | SKLSM, Institute of Semiconductors, Chinese Academy of Sciences,Institute of Semiconductors, Chinese Academy of Sciences,Institute of Semiconductors, Chinese Academy of Sciences |
| |
| Abstract: | A microwave-modulated reflectance spectroscopy (MMRS) measurement system was constructed and this MMRS technique was used to identify a transition from holes in valence band to electrons in the ground subband (GS) of the two-dimensional electron system (2DES) embedded 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 bandfilling effect of holes in valence band in the GaAs/AlGaAs heterostructure. A theoretical simulation based on Kramers-Kronig relation was also presented which was comparable with the experimental data. |
| |
| Keywords: | microwave-modulated reflectance spectroscopy two-dimensional electron system |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《红外与毫米波学报》浏览原始摘要信息 |
| 点击此处可从《红外与毫米波学报》下载免费的PDF全文 |
