Experimental evidence of delocalized states in random dimer superlattices

We study the electronic properties of GaAs-AlGaAs superlattices with intentional correlated disorder by means of photoluminescence and vertical de resistance. The results are compared to those obtained in ordered and uncorrelated disordered superlattices. We report the first experimental evidence th...

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Detalhes bibliográficos
Autores: Bellani, V., Díez Alcántara, Eduardo, Hey, R., Toni, L., Tarricone, L., Parravicini, G.B., Domínguez-Adame Acosta, Francisco, Gómez-Alcalá, R.
Formato: artículo
Fecha de publicación:1999
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/59362
Acesso em linha:https://hdl.handle.net/20.500.14352/59362
Access Level:acceso abierto
Palavra-chave:538.9
Correlated Disorder
Dc Conductance
Localization
Absence
Photoluminescence
Física de materiales
Descrição
Resumo:We study the electronic properties of GaAs-AlGaAs superlattices with intentional correlated disorder by means of photoluminescence and vertical de resistance. The results are compared to those obtained in ordered and uncorrelated disordered superlattices. We report the first experimental evidence that spatial correlations inhibit localization of states in disordered low-dimensional systems, as our previous theoretical calculations suggested, in contrast to the earlier belief that all eigenstates are localized.

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