THERMALIZATION EFFECT ON RADIATIVE DECAY OF EXCITONS IN QUANTUM WIRES

被引：153

作者：

AKIYAMA, H

KOSHIBA, S

SOMEYA, T

WADA, K

NOGE, H

NAKAMURA, Y

INOSHITA, T

SHIMIZU, A

SAKAKI, H

机构：

[1] ERATO, RES DEV CORP JAPAN, QUANTUM WAVE PROJECT, MEGURO KU, TOKYO 153, JAPAN

[2] NIPPON TELEGRAPH & TEL PUBL CORP, LSI LABS, ATSUGI, KANAGAWA 24301, JAPAN

[3] UNIV TOKYO, INST PHYS, MEGURO KU, TOKYO 153, JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.72.924

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The radiative decay of one-dimensional (1D) excitons is studied in novel GaAs quantum wires (QWIs) prepared by molecular beam epitaxy. The temperature dependence of the radiative lifetime tau(T) is measured, and is compared with that of 2D excitons in quantum wells (QWs): tau(T) of 1D excitons grows much more slowly with T than that of 2D excitons, resulting in shorter lifetime for T > 20 K. This is ascribed to thermalization in the concentrated 1D density of states in QWIs. Analysis based on a theory has revealed that tau(T) is expressed as 92 square-root T ps K-1/2 in QWIs and as 24T ps K-1 in QWs.

引用

页码：924 / 927

页数：4

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