GAMMA-MINIBAND AND X-MINIBAND STRUCTURE IN GAAS-ALAS SHORT-PERIOD SUPERLATTICES

被引：5

作者：

PULSFORD, NJ ^{[1
]}

NICHOLAS, RJ ^{[1
]}

DAWSON, P ^{[1
]}

MOORE, KJ ^{[1
]}

DUGGAN, G ^{[1
]}

FOXON, CT ^{[1
]}

机构：

[1] PHILIPS RES LABS,REDHILL RH1 5HA,SURREY,ENGLAND

来源：

SURFACE SCIENCE | 1990年 / 228卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(90)90259-B

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：

In this work, we present a review of our recent study [Phys. Rev. Lett. 63 (1989) 2284] of the anisotropy in the bandstructure of a strongly coupled GaAsAlAs superlattice by the application of a magnetic field. We report the observation of hybridisation of the zone centre Γ-state with zone folded X-states in the superlattice dispersion, which is demonstrated by the presence of an energy gap in the Landau level diagram for cyclotron motion through the layers. A simple model is developed to treat Γ-X mixing at interfaces in the envelope function approximation and the observed mixing strength is examined in terms of theoretical predictions. © 1990.

引用

页码：62 / 64

页数：3

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