Detection of compressible and incompressible states in quantum dots and antidots by far-infrared spectroscopy

被引：46

作者：

Bollweg, K

Kurth, T

Heitmann, D

Gudmundsson, V

Vasiliadou, E

Grambow, P

Eberl, K

机构：

[1] UNIV HAMBURG,ZENTRUM MIKROSTRUKTURFORSCH,D-20355 HAMBURG,GERMANY

[2] UNIV ICELAND,INST SCI,IS-107 REYKJAVIK,ICELAND

[3] MAX PLANCK INST FESTKORPERFORSCH,D-70569 STUTTGART,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.76.2774

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In arrays of AlxGa1-xAs-GaAs quantum dots and antidots we observe, with far-infrared spectroscopy for increasing magnetic field, huge (up to 20%) oscillations of the resonance frequency of the edge-magnetoplasmon-like mode. At fully occupied Landau levels the frequency has a maximum for the dots, and the reverse behavior, a minimum, for the antidots. We show that this is caused by the formation of compressible and incompressible stripes at the edges of the dots and antidots.

引用

页码：2774 / 2777

页数：4

共 25 条

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