Electrons and phonons in quantum wells

被引:4
|
作者
Pozela, J [1 ]
Namajunas, A [1 ]
Pozela, K [1 ]
Juciene, V [1 ]
机构
[1] Inst Semicond Phys, LT-2600 Vilnius, Lithuania
关键词
D O I
10.1134/1.1187811
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The modulation of electron and polar optical phonon states in an AlGaAs/GaAs/AlGaAs quantum well (QW) with an inserted thin AlAs barrier is considered. The OW width dependence of electron-phonon scattering rates are estimated. The large contribution to the change of the electron subband population, the photovoltaic effect, and the electron mobility in the QW accounts for the resonant intersubband scattering of electrons by interface phonons. The decrease of electron mobility limited by polar optical phonon scattering with increasing carrier concentration in the QW is established. The conditions for the increase of mobility in the QW by inserting the AlAs barrier are found. (C) 1999 American Institute of Physics. [S1063- 7826(99)00609-2].
引用
收藏
页码:956 / 960
页数:5
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