EXPERIMENTAL INVESTIGATION OF THE DAMPING OF LOW-FREQUENCY EDGE MAGNETOPLASMONS IN GAAS-ALXGA1-XAS HETEROSTRUCTURES

被引：19

作者：

TALYANSKII, VI

SIMMONS, MY

FROST, JEF

PEPPER, M

RITCHIE, DA

CHURCHILL, AC

JONES, GAC

机构：

[1] Cavendish Laboratory, University of Cambridge, Cambridge CB3 OHE, Madingley Road

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.50.1582

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A detailed experimental study of damping and velocity of low-frequency edge magnetoplasmons in GaAs-AlxGa1-x As heterostructures is presented. The damping is observed to be frequency dependent at filling factors close to integer values. The magnitude of the damping increases with frequency, the dependence being somewhere between linear and quadratic. This finding indicates that the damping of low-frequency edge magnetoplasmons cannot be described by the effective relaxation time. The experimental results are discussed in terms of existing models of low-frequency edge magnetoplasmons.

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页码：1582 / 1587

页数：6

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