Efficient acoustic phonon broadening in single self-assembled InAs/GaAs quantum dots -: art. no. 033313

被引：42

作者：

Kammerer, C

Cassabois, G

Voisin, C

Delalande, C

Roussignol, P

Lemaître, A

Gérard, JM

机构：

[1] Ecole Normale Super, Phys Mat Condensee Lab, F-75231 Paris 05, France

[2] CNRS, LPN, F-92225 Bagneux, France

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.65.033313

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report systematic temperature-dependent measurements of photoluminescence excitation spectra in single self-assembled InAs/GaAs quantum dots. We studied the increase with temperature of the excited-state homogeneous linewidth for different quantum dots. We found a correlation between the acoustic phonon broadening efficiency and the background intensity in the photoluminescence excitation spectra. These results demonstrate the interaction of the discrete quantum dot excited states with a quasicontinuum of states and impose severe limitations on the isolated artificial macroatom scheme for a single quantum dot.

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页码：333131 / 333134

页数：4

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