Renormalization of the Frohlich constant for electrons in a quantum dot

被引：17
作者：
Jacak, L
Krasnyj, J
Jacak, W
机构：
[1] Wroclaw Univ Technol, Inst Phys, PL-50370 Wroclaw, Poland
[2] Univ Opole, Math Inst, PL-45051 Opole, Poland
来源：
PHYSICS LETTERS A | 2002年 / 304卷 / 5-6期
关键词：
nanostructures; quantum dots; electron-phonon interactions;
D O I：
10.1016/S0375-9601(02)01363-4
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Recent experimental investigations of far-infrared attenuation in GaAs/InAs quantum dot in magnetic field and measurements of photoluminescence features for smaller pyramid-shape GaAs/InAs quantum dots indicated an enhancement of coupling of longitudinal optical phonons with confined electrons, which manifested itself in a significant increase of the effective Frohlich constant in comparison to its bulk value. We give a simple quasiclassical explanation of this enhancement and relate the renormalization of the Frohlich constant with the dot diameter. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：168 / 171
页数：4
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