OPTICAL PHENOMENA ELUCIDATING CARRIER TRANSPORT IN SHORT-PERIOD SUPERLATTICES

被引：2
|
作者：
URALTSEV, IN
KOCHERESHKO, VP
KOPEV, PS
VASILIEV, AM
YAKOVLEV, DR
机构：
[1] A.F.Ioffe Physico-Technical Institute, Academy of Sciences, the USSR
来源：
SURFACE SCIENCE | 1990年 / 229卷 / 1-3期
关键词：
D O I：
10.1016/0039-6028(90)90930-7
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Using various optical techniques we have studied parameters of miniband structure and carrier transport in GaAs/AlGaAs shortperiod superlattices (SL). The quasi-three-dimensional character of SL with periods d < 100 Å is demonstrated by measuring the exciton oscillator strengths. The linear in-wave vector splitting of extended Bloch states and the manifestation of localized states are found in the electron miniband. The transition from Bloch-like behaviour to localized behaviour is observed for heavy-hole transport in the presence of a magnetic field parallel to the layers of SL's with d ≤ 50 Å. © 1990.
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收藏
页码：459 / 463
页数：5
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