Phonon interaction of single excitons and biexcitons

被引：73

作者：

Gindele, F ^{[1
]}

Hild, K ^{[1
]}

Langbein, W ^{[1
]}

Woggon, U ^{[1
]}

机构：

[1] Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.60.R2157

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The exciton-phonon coupling of a single zero-dimensional exciton is studied in epitaxially grown CdSe/Zn1 - xCdxSe quantum dot structures by analyzing its linewidth and phonon-assisted recombination. The single excitons do not couple to only a single phonon mode, but to a distribution of phonons, here consisting of the zone-center ZnSe longitudinal optic (LO) phonon and of mixed modes with an energy statistics centered between the ZnSe and CdSe LO phonon. Both exciton and corresponding biexciton reveal LO-phonon replica intensities of similar to 3% of the respective zero-phonon emission. These similar LO-phonon coupling strengths are evidence of a reduced polarity of the exciton states within the biexciton as the result of exciton-exciton correlation. [S0163-1829(99)50128-8].

引用

页码：R2157 / R2160

页数：4

共 31 条

[1] ELECTRON-VIBRATION COUPLING IN SEMICONDUCTOR CLUSTERS STUDIED BY RESONANCE RAMAN-SPECTROSCOPY [J].