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Title

Mesoscopic behavior of the transmission phase through confined correlated electronic systems

AuthorsMolina, Rafael A. CSIC ORCID; Schmitteckert, Peter; Weinmann, Dietmar; Jalabert, Rodolfo A.; Jacquod, Philippe
Keywords[PACS] Quantum interference devices
dynamic or topological
[PACS] Phases: geometric
single-electron tunneling
[PACS] General theory, scattering mechanisms
[PACS] Coulomb blockade
Issue Date2013
PublisherAmerican Institute of Physics
CitationPhysical Review B - Condensed Matter and Materials Physics 88: 045419 (2013)
AbstractWe investigate the effect of electronic correlations on the transmission phase of quantum coherent scatterers, considering quantum dots in the Coulomb blockade regime connected to two single-channel leads. We focus on transmission zeros and the associated π-phase lapses that have been observed in interferometric experiments. We numerically explore two types of models for quantum dots: (i) lattice models with up to eight sites, and (ii) resonant level models with up to six levels. We identify different regimes of parameters where the presence of electronic correlations is responsible for the increase or the decrease of the number of transmission zeros versus electrochemical potential on the dot. We show that within the two models considered, interaction effects do not reproduce the universal behavior of alternating resonances and phase lapses, experimentally observed in many-electron Coulomb blockaded dots. © 2013 American Physical Society.
URIhttp://hdl.handle.net/10261/104360
DOIhttp://dx.doi.org/10.1103/PhysRevB.88.045419
Identifiersdoi: 10.1103/PhysRevB.88.045419
issn: 1098-0121
Appears in Collections:(CFMAC-IEM) Artículos
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