Coherence of elementary excitations in disordered GaAs/AlGaAs superlattices



Título del documento: Coherence of elementary excitations in disordered GaAs/AlGaAs superlattices
Revista: Brazilian journal of physics
Base de datos: PERIÓDICA
Número de sistema: 000310497
ISSN: 0103-9733
Autors: 1
Institucions: 1Universidade de Sao Paulo, Instituto de Fisica de Sao Carlos, Sao Carlos, Sao Paulo. Brasil
Any:
Període: Sep
Volum: 36
Número: 3B
Paginació: 902-904
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés The localization properties of the single-particle and collective electron excitations were investigated in the intentionally disordered GaAs/AlGaAs superlattices by weak field magnetoresistance and Raman scattering. The localization length of the individual electron was found to be considerably larger than that one of the collective excitations. This suggests that the disorder has weaker effect on the electrons than on their collective motion and that the interaction which gives rise to the collective effects increases localization
Disciplines Física y astronomía
Paraules clau: Física de materia condensada,
Coherencia,
Superredes,
Excitación electrónica
Keyword: Physics and astronomy,
Condensed matter physics,
Coherence,
Superlattices,
Electron excitation
Text complet: Texto completo (Ver HTML)