Long transient dynamics in the Anderson-Holstein model out of equilibrium
Entity
UAM. Departamento de Física Teórica de la Materia CondensadaPublisher
American Physical SocietyDate
2013-02-25Citation
10.1103/PhysRevB.87.085127
Physical Review B 87.8 (2013): 085127
ISSN
1098-0121; 1550-235X (online)DOI
10.1103/PhysRevB.87.085127Funded by
Further the computational resources from the bwGRiD project and financial support by Spanish Mineco through Grants No. FIS2008-04209 and No. FIS2011-26516 and the European Research Area (ERA) NanoSci Collaborative Project CHENANOM is acknowledgedProject
Gobierno de España. FIS2008-04209; Gobierno de España. FIS2011-26516; info:eu-repo/grantAgreement/EC/FP7/268739Editor's Version
http://dx.doi.org/10.1103/PhysRevB.87.085127Subjects
FísicaRights
© 2013 American Physical SocietyAbstract
We calculate the time-dependent nonequilibrium current through a single-level quantum dot strongly coupled to a vibrational mode. The nonequilibrium real-time dynamics caused by an instantaneous coupling of the leads to the quantum dot is discussed using an approximate method. The approach, which is specially designed for the strong polaronic regime, is based on the so-called polaron tunneling approximation. Considering different initial dot occupations, we show that a common steady state is reached after times much larger than the typical electron tunneling times due to a polaron blocking effect in the dot charge. A direct comparison is made with numerically exact data, showing good agreement for the time scales accessible by the diagrammatic Monte Carlo simulation method
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Google Scholar:Albrecht, K. F.
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Martin-Rodero, A.
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Monreal Vélez, Rosa
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Mühlbacher, L.
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Levy-Yeyati Mizrahi, Alfredo
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