Extended states and dynamical localization in semiconductor superlattices

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dc.contributor.author Domínguez-Adame, Francisco
dc.contributor.author Sánchez, Angel
dc.contributor.author Diez, Enrique
dc.date.accessioned 2012-09-12T13:06:53Z
dc.date.available 2012-09-12T13:06:53Z
dc.date.issued 1997-01-15
dc.identifier.bibliographicCitation Journal of Applied Physics, vol. 81, n. 2, 15 jan. 1997. Pp. 777–780
dc.identifier.issn 0021-8979 (print version)
dc.identifier.issn 1089-7550 (online version)
dc.identifier.uri http://hdl.handle.net/10016/15308
dc.description.abstract We 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.sponsorship This work has been supported by CICYT (Spain) under project MAT95-0325.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher American Institute of Physics
dc.rights © American Institute of Physics
dc.title Extended states and dynamical localization in semiconductor superlattices
dc.type article
dc.description.status Publicado
dc.relation.publisherversion http://dx.doi.org/10.1063/1.364139
dc.subject.eciencia Matemáticas
dc.identifier.doi 10.1063/1.364139
dc.rights.accessRights openAccess
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 777
dc.identifier.publicationissue n. 2
dc.identifier.publicationlastpage 780
dc.identifier.publicationtitle Journal of Applied Physics
dc.identifier.publicationvolume vol. 81
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