Observation of axisymmetric dark plasma excitations in a two-dimensional electron system

被引：15

作者：

Muravev, V. M. ^{[1
]}

Andreev, I. V. ^{[1
]}

Belyanin, V. N. ^{[1
]}

Gubarev, S. I. ^{[1
]}

Kukushkin, I. V. ^{[1
]}

机构：

[1] RAS, Inst Solid State Phys, Chernogolovka 142432, Russia

来源：

PHYSICAL REVIEW B | 2017年 / 96卷 / 04期

基金：

俄罗斯科学基金会;

关键词：

MAGNETOPLASMONS; RESONANCE; PHOTOCONDUCTIVITY; RADIATION;

D O I：

10.1103/PhysRevB.96.045421

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Resonant microwave absorption of two-dimensional electron systems in AlGaAs/GaAs heterostructures with a single Corbino disk geometry has been studied. Axisymmetric dark plasmon modes have been excited using a near-field excitation technique, and their magnetodispersion have been determined in the presence of a perpendicular magnetic field. Plasma excitations observed have been compared to bright plasmon modes in a single disk of identical geometry. Dark plasmon modes have been found to have considerably longer lifetimes compared to bright plasmon modes due to the inhibition of superradiant losses.

引用

页数：4

共 27 条

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