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

Authors
TALYANSKII VI SIMMONS MY FROST JEF PEPPER M RITCHIE DA CHURCHILL AC JONES GAC
Citation
Vi. Talyanskii et al., EXPERIMENTAL INVESTIGATION OF THE DAMPING OF LOW-FREQUENCY EDGE MAGNETOPLASMONS IN GAAS-ALXGA1-XAS HETEROSTRUCTURES, Physical review. B, Condensed matter, 50(3), 1994, pp. 1582-1587
Citations number
30
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
50
Issue
3
Year of publication
1994
Pages
1582 - 1587
Database
ISI
SICI code
0163-1829(1994)50:3<1582:EIOTDO>2.0.ZU;2-2
Abstract
A detailed experimental study of damping and velocity of low-frequency edge magnetoplasmons in GaAs-AlxGa1-x As heterostructures is presente d. The damping is observed to be frequency dependent at filling factor s close to integer values. The magnitude of the damping increases with frequency, the dependence being somewhere between linear and quadrati c. This finding indicates that the damping of low-frequency edge magne toplasmons cannot be described by the effective relaxation time. The e xperimental results are discussed in terms of existing models of low-f requency edge magnetoplasmons.