Coherent electron dynamics in a two-dimensional random system with mobility edges

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dc.contributor.authorMoura, F. A. B. F., de
dc.contributor.authorLyra, M. L.
dc.contributor.authorDomínguez-Adame Acosta, Francisco
dc.contributor.authorMalyshev, Andrey
dc.date.accessioned2023-06-20T11:15:45Z
dc.date.available2023-06-20T11:15:45Z
dc.date.issued2007-02-07
dc.description© Copyright IOP Publishing. This work was partially supported by CNPq, CAPES, and FINEP (Federal Brazilian Agencies), and FAPEAL (Alagoas State Agencies). Work in Madrid was supported by MEC (project FIS2006-01485). VAM acknowledges support from the Stichting voor Fundamenteel Onderzoek der Materie (FOM) and from ISTC (grant no 2679).
dc.description.abstractWe study numerically the dynamics of a one-electron wavepacket in a two-dimensional random lattice with long-range correlated diagonal disorder in the presence of a uniform electric field. The time-dependent Schrodinger equation is used for this purpose. We find that the wavepacket displays Bloch-like oscillations associated with the appearance of a phase of delocalized states in the strong correlation regime. The amplitude of oscillations directly reflects the bandwidth of the phase and allows us to measure it. The oscillations reveal two main frequencies whose values are determined by the structure of the underlying potential in the vicinity of the wavepacket maximum.
dc.description.departmentDepto. de Física de Materiales
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Brasil
dc.description.sponsorshipCoordenação de aperfeiçoamento de pessoal de nivel superior (CAPES), Brasil
dc.description.sponsorshipFinanciadora de Estudos e Projetos (FINEP), Brasil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de Alagoas (FAPEAL), Brasil
dc.description.sponsorshipMinisterio de Educación y Ciencia (MEC), España
dc.description.sponsorshipStichting voor Fundamenteel Onderzoek der Materie (FOM), Holanda
dc.description.sponsorshipInternational Science and Technology Center (ISTC)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/37888
dc.identifier.doi10.1088/0953-8984/19/5/056204
dc.identifier.issn0953-8984
dc.identifier.officialurlhttp://dx.doi.org/10.1088/0953-8984/19/5/056204
dc.identifier.relatedurlhttp://iopscience.iop.org/
dc.identifier.relatedurlhttp://arxiv.org/abs/cond-mat/0701202
dc.identifier.urihttps://hdl.handle.net/20.500.14352/51891
dc.issue.number5
dc.journal.titleJournal of physics: condensed matter
dc.language.isoeng
dc.publisherIOP Publishing Ltd.
dc.relation.projectIDFIS2006-01485
dc.relation.projectID2679
dc.rights.accessRightsopen access
dc.subject.cdu538.9
dc.subject.keywordRange correlated disorder
dc.subject.keywordRandom-dimer model
dc.subject.keywordMetal-insulator-transition
dc.subject.keywordAnderson model
dc.subject.keywordConducting polymers
dc.subject.keywordDiagonal disorder
dc.subject.keywordLocalization
dc.subject.keywordDelocalization
dc.subject.keywordAbsence
dc.subject.keywordDiffusion
dc.subject.ucmFísica de materiales
dc.titleCoherent electron dynamics in a two-dimensional random system with mobility edges
dc.typejournal article
dc.volume.number19
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