GAMMA-X-GAMMA ELECTRON-TRANSFER IN MIXED TYPE-I TYPE-II GAAS/ALAS QUANTUM-WELL STRUCTURES

被引：49

作者：

FELDMANN, J

PREIS, M

GOBEL, EO

DAWSON, P

FOXON, CT

GALBRAITH, I

机构：

[1] UNIV MANCHESTER,INST SCI & TECHNOL,DEPT PURE & APPL PHYS,MANCHESTER M60 1QD,LANCS,ENGLAND

[2] UNIV MANCHESTER,INST SCI & TECHNOL,ZENTRUM MAT WISSENSCH,MANCHESTER M60 1QD,LANCS,ENGLAND

[3] UNIV NOTTINGHAM,DEPT PHYS,NOTTINGHAM NG7 2RD,ENGLAND

[4] HERIOT WATT UNIV,DEPT PHYS,EDINBURGH EH14 4AS,MIDLOTHIAN,SCOTLAND

来源：

SOLID STATE COMMUNICATIONS | 1992年 / 83卷 / 03期

关键词：

D O I：

10.1016/0038-1098(92)90846-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have studied the relaxation dynamics of photoexcited electrons in a mixed type I-type II GaAs/AlAs quantum well structure. The spatial electron-hole separation via a GAMMA-X-GAMMA electron transfer is detected in a time-resolved, non-degenerate pump and probe experiment. The time-constant for the spatial GAMMA-X-GAMMA electron transfer is determined to about 30 ps and is governed by the low density of final GAMMA-states.

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页码：245 / 248

页数：4

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