Magnetic field quenching of miniband conduction in quasi-one-dimensional superlattices

被引：12
|
作者：
Eaves, L [1 ]
Murphy, HM
Nogaret, A
Stoddart, ST
Main, PC
Henini, M
Mori, N
Hamaguchi, C
Maude, DK
Portal, JC
机构：
[1] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England
[2] Osaka Univ, Dept Elect Engn, Suita, Osaka 565, Japan
[3] CNRS, LCMI, F-38042 Grenoble, France
[4] CNRS, INSA, F-31077 Toulouse, France
来源：
PHYSICA B | 1999年 / 272卷 / 1-4期
基金：
英国工程与自然科学研究理事会;
关键词：
superlattice; miniband; magneto-transport;
D O I：
10.1016/S0921-4526(99)00268-9
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We investigate miniband conduction in GaAs/AlxGa1-xAs superlattices at low temperatures and at high magnetic fields up to 23 T. The fields are applied perpendicular to the tunnel barriers. The current flowing through the sample is strongly suppressed by the magnetic field over the voltage range corresponding to the miniband conduction peak. This effect is related to the formation of quasi-one-dimensional Landau level minibands when the cyclotron energy exceeds the miniband width. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：190 / 193
页数：4
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