2024-03-29T08:15:24Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1043602016-02-17T21:32:49Zcom_10261_135com_10261_4col_10261_388
DIGITAL.CSIC
author
Molina, Rafael A.
author
Schmitteckert, Peter
author
Weinmann, Dietmar
author
Jalabert, Rodolfo A.
author
Jacquod, Philippe
2014-11-05T11:56:17Z
2014-11-05T11:56:17Z
2013
Physical Review B - Condensed Matter and Materials Physics 88: 045419 (2013)
http://hdl.handle.net/10261/104360
10.1103/PhysRevB.88.045419
We 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.
eng
openAccess
[PACS] Quantum interference devices
dynamic or topological
[PACS] Phases: geometric
single-electron tunneling
[PACS] General theory, scattering mechanisms
[PACS] Coulomb blockade
Mesoscopic behavior of the transmission phase through confined correlated electronic systems
artículo
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URL
https://digital.csic.es/bitstream/10261/104360/1/RAMolina.pdf
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RAMolina.pdf
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https://digital.csic.es/bitstream/10261/104360/5/RAMolina.pdf.txt
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RAMolina.pdf.txt