HYDRODYNAMICAL THEORY OF MAGNETOPLASMA EXCITATIONS IN AN ANTIDOT SYSTEM

被引：17

作者：

FESSATIDIS, V ^{[1
]}

CUI, HL ^{[1
]}

KUHN, O ^{[1
]}

机构：

[1] HUMBOLDT UNIV,INST THEORET PHYS,O-1040 BERLIN,GERMANY

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.47.6598

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A linear hydrodynamical theory is developed to study the collective excitations of a two-dimensional electron gas in a normal magnetic field, constrained to move about a circular, infinite potential barrier (known as an antidot). The theory reveals three low-frequency branches in the collective spectrum: (i) a branch that starts from zero at zero magnetic field, reaches a broad maximum at a moderate field, and decreases slowly thereafter; (ii) a mode at the cyclotron resonance frequency; and (iii) a mode that starts at a finite frequency at zero field and merges into the cyclotron resonance at high field. Recent experimental data are compared with the present theoretical results.

引用

页码：6598 / 6602

页数：5

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