Electrically tunable GHz oscillations in doped GaAs-AlAs superlattices

dc.bibliographicCitation.journalTitlePhyical Review Beng
dc.contributor.authorKastrup, J.
dc.contributor.authorHey, R.
dc.contributor.authorPloog, K.H.
dc.contributor.authorGrahn, H.T.
dc.contributor.authorBonilla, L.L.
dc.contributor.authorKindelan, M.
dc.contributor.authorMoscoso, M.
dc.contributor.authorWacker, A.
dc.date.accessioned2016-03-24T17:37:59Z
dc.date.available2019-06-28T12:38:09Z
dc.date.issued1997
dc.description.abstractTunable oscillatory modes of electric-field domains in doped semiconductor superlattices are reported. The experimental investigations demonstrate the realization of tunable, GHz frequencies in GaAs-AlAs superlattices covering the temperature region from 5 to 300 K. The orgin of the tunable oscillatory modes is determined using an analytical and a numerical modeling of the dynamics of domain formation. Three different oscillatory modes are found. Their presence depends on the actual shape of the drift velocity curve, the doping density, the boundary condition, and the length of the superlattice. For most bias regions, the self-sustained oscillations are due to the formation, motion, and recycling of the domain boundary inside the superlattice. For some biases, the strengths of the low and high field domain change periodically in time with the domain boundary being pinned within a few quantum wells. The dependency of the frequency on the coupling leads to the prediction of a new type of tunable GHz oscillator based on semiconductor superlattices.eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/3913
dc.language.isoengeng
dc.publisherCambridge : arXiveng
dc.relation.urihttp://arxiv.org/abs/cond-mat/9707246
dc.rights.licenseThis document may be downloaded, read, stored and printed for your own use within the limits of § 53 UrhG but it may not be distributed via the internet or passed on to external parties.eng
dc.rights.licenseDieses Dokument darf im Rahmen von § 53 UrhG zum eigenen Gebrauch kostenfrei heruntergeladen, gelesen, gespeichert und ausgedruckt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.ger
dc.subject.ddc530eng
dc.titleElectrically tunable GHz oscillations in doped GaAs-AlAs superlatticeseng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccesseng
wgl.contributorPDIeng
wgl.subjectPhysikeng
wgl.typeZeitschriftenartikeleng
Files
Collections