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Localization on a two-channel model with cross-correlated disorder

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dc.contributor.authorCarvalho, R.C.P.
dc.contributor.authorLyra, M. L.
dc.contributor.authorde Moura, F.A.B.F.
dc.contributor.authorDomínguez-Adame Acosta, Francisco
dc.date.accessioned2023-06-20T03:54:57Z
dc.date.available2023-06-20T03:54:57Z
dc.date.issued2011-05-04
dc.description©IOP Publishing Ltd. This work was partially financed by the Brazilian Research Agencies CAPES (PROCAD, Rede NanoBioestruturas), CNPq (INCT-Nano(Bio)Simes, Project no. 573925/2008-9) and FAPERN/CNPq (Pronex). Work at Madrid was supported by MEC (projects MOSAICO and MAT2010-17180). FABF de Moura would like to thank the hospitality of Departamento de Física de Materiales (UCM).
dc.description.abstractWe study the wavepacket dynamics in a two-channel Anderson model with correlated diagonal disorder. To impose correlations in the disorder distribution we construct the on-site energy landscape following both symmetric and antisymmetric rules. Our numerical data show that symmetric cross-correlations have a small impact on the degree of localization of the one-particle eigenstates. In contrast, antisymmetric correlations lead to a reduction of the effective degree of disorder, thus resulting in a substantial increase of the wavepacket spread. A finite-size scaling analysis shows that the antisymmetric cross-correlations, in spite of weakening the localization, do not promote ballistic transport. The present results shed light on recent findings concerning an apparent delocalization transition in a correlated DNA-like ladder model.
dc.description.departmentDepto. de Física de Materiales
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipCAPES (PROCAD, Rede NanoBioestruturas)
dc.description.sponsorshipCNPq (INCT-Nano(Bio)Simes)
dc.description.sponsorshipFAPERN/CNPq (Pronex)
dc.description.sponsorshipMEC
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/31063
dc.identifier.doi10.1088/0953-8984/23/17/175304
dc.identifier.issn0953-8984
dc.identifier.officialurlhttp://dx.doi.org/10.1088/0953-8984/23/17/175304
dc.identifier.relatedurlhttp://iopscience.iop.org
dc.identifier.urihttps://hdl.handle.net/20.500.14352/44663
dc.issue.number17
dc.journal.titleJournal of physics: Condensed matter
dc.language.isospa
dc.publisherIOP Publishing Ltd.
dc.relation.projectID573925/2008-9
dc.relation.projectIDMOSAICO
dc.relation.projectIDMAT2010-17180
dc.rights.accessRightsopen access
dc.subject.cdu538.9
dc.subject.keywordRandom-cimer model
dc.subject.keywordDelocalization transition
dc.subject.keywordAnderson model
dc.subject.keywordMobility edge
dc.subject.keywordAbsence
dc.subject.keywordChains
dc.subject.ucmFísica de materiales
dc.subject.ucmFísica del estado sólido
dc.subject.unesco2211 Física del Estado Sólido
dc.titleLocalization on a two-channel model with cross-correlated disorder
dc.typejournal article
dc.volume.number23
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