EXPERIMENTAL-OBSERVATION OF LANDAU-LEVELS IN NONPERIODIC (FIBONACCI) SUPERLATTICES

被引：38

作者：

TOET, D

POTEMSKI, M

WANG, YY

MAAN, JC

TAPFER, L

PLOOG, K

机构：

[1] Hochfeld Magnetlabor, Max-Planck-Institut F̈r Festkörperforschung, BP 166X

[2] Max-Planck-Institut F̈r Festkörperforschung, D-7000 Stuttgart 80

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.66.2128

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Absorption spectra of GaAs/GaAlAs Fibonacci superlattices (FSL) with magnetic fields parallel to the layers show self-similarity at field values scaled by tau-2 [tau = (1 + square-root 5)/2]. The one-dimensional nonperiodicity of the FSL affects the carrier motion perpendicular to the layers very differently from that parallel to the layers: In B parallel-to, where carriers have to cross several barriers to complete a cyclotron orbit, clear Landau levels are observed, whereas in B perpendicular-to the merging of the magnetic levels superimposed on the irregular eigenvalue spectrum of the FSL does not yield equally spaced spectra.

引用

页码：2128 / 2131

页数：4

共 14 条

[1] ABSENCE OF DIFFUSION IN CERTAIN RANDOM LATTICES [J].