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.
引用
收藏
页码：245 / 248
页数：4
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