RESONANT SHALLOW DONOR MAGNETOPOLARON EFFECT IN A GAAS/ALGAAS QUANTUM-DOT IN HIGH MAGNETIC-FIELDS

被引：47

作者：

ZHU, KD ^{[1
]}

KOBAYASHI, T ^{[1
]}

机构：

[1] UNIV TOKYO,FAC SCI,DEPT PHYS,BUNKYO KU,TOKYO 113,JAPAN

来源：

SOLID STATE COMMUNICATIONS | 1994年 / 92卷 / 04期

关键词：

NANOSTRUCTURES; SEMICONDUCTORS; ELECTRON PHONON INTERACTIONS; CYCLOTRON RESONANCE;

D O I：

10.1016/0038-1098(94)90716-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Resonant shallow donor magnetopolaron effect in a GaAs/AlGaAs quantum dot in high magnetic fields is investigated by the variational treatment. It is shown that both the cyclotron resonant frequency omega*c+ due to the 1s-p+ hydrogenic transition and the cyclotron resonant frequency omega*c- due to the 1s-p- hydrogenic transition increase with the decrease of the dot size. The cyclotron resonant frequency omega*c+ is always larger than the bulk LO-phonon frequency omega(LO), while the cyclotron resonant frequency omega*c- is lower than omega(LO) for larger quantum dots. The results also show that Coulomb interaction effect on the resonant frequencies is significant.

引用

页码：353 / 356

页数：4

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