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Spacer layer thickness fluctuation scattering in a modulation-doped Al<sub>x</sub>Ga<sub>1-x</sub>As/GaAs/Al<sub>x</sub>Ga<sub>1-x</sub>As quantum well |
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| Authors: | Gu Cheng-Yan Liu Gui-Peng Shi Kai Song Ya-Feng Li Cheng-Ming Liu Xiang-Lin Yang Shao-Yan Zhu Qin-Sheng and Wang Zhan-Guo |
| Affiliation: | Key Laboratory of Semiconductor Materials Science,Institute of Semiconductors,Chinese Academy of Sciences, P.O.Box 912 |
| Abstract: | We theoretically study the influence of spacer layer thickness fluctuation(SLTF) on the mobility of a twodimensional electron gas(2DEG) in the modulation-doped Al x Ga 1 x As/GaAs/Al x Ga 1 x As quantum well.The dependence of the mobility limited by SLTF scattering on spacer layer thickness and donor density are obtained.The results show that SLTF scattering is an important scattering mechanism for the quantum well structure with a thick well layer. |
| Keywords: | spacer layer thickness fluctuation scattering interface roughness scattering 2DEG mobility |
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