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Extended states and dynamical localization in semiconductor superlattices

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dc.affiliation.dptoUC3M. Departamento de Matemáticases
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Interdisciplinar de Sistemas Complejos (GISC)es
dc.contributor.authorDomínguez-Adame, Francisco
dc.contributor.authorSánchez, Angel
dc.contributor.authorDiez, Enrique
dc.date.accessioned2012-09-12T13:06:53Z
dc.date.available2012-09-12T13:06:53Z
dc.date.issued1997-01-15
dc.description.abstractWe study the quantum dynamics of electronic wave packets in quantum-well based semiconductor superlattices subject to an applied electric field. Using a high-accuracy numerical method, we analyze the dynamical behavior of electronic wave packets in periodic, random and random dimer superlattices. The spatial extent of electronic states is characterized by means of the time-dependent inverse participation ratio. We show that the delocalized states recently found in random dimer superlattices become spatially localized under the action of the applied field ~dynamical localization! but wavepackets are much less localized than in purely random superlattices at moderate field. We conclude that the resonant tunneling effects causing delocalization in dimer superlattices play an important role even in the presence of moderate electric field.
dc.description.sponsorshipThis work has been supported by CICYT (Spain) under project MAT95-0325.
dc.description.statusPublicado
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationJournal of Applied Physics, vol. 81, n. 2, 15 jan. 1997. Pp. 777–780
dc.identifier.doi10.1063/1.364139
dc.identifier.issn0021-8979 (print version)
dc.identifier.issn1089-7550 (online version)
dc.identifier.publicationfirstpage777
dc.identifier.publicationissuen. 2
dc.identifier.publicationlastpage780
dc.identifier.publicationtitleJournal of Applied Physics
dc.identifier.publicationvolumevol. 81
dc.identifier.urihttps://hdl.handle.net/10016/15308
dc.language.isoeng
dc.publisherAmerican Institute of Physics
dc.relation.publisherversionhttp://dx.doi.org/10.1063/1.364139
dc.rights© American Institute of Physics
dc.rights.accessRightsopen access
dc.subject.ecienciaMatemáticas
dc.titleExtended states and dynamical localization in semiconductor superlattices
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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