Local density of states on a vibrational quantum dot out of equilibrium
Entity
UAM. Departamento de Física Teórica de la Materia CondensadaPublisher
American Physical SocietyDate
2015-02-27Citation
10.1103/PhysRevB.91.064305
Physical Review B - Condensed Matter and Materials Physics 91.6 (2015): 064305
ISSN
1098-0121 (print); 1550-235X (online)DOI
10.1103/PhysRevB.91.064305Funded by
This work was financially supported by Spanish Mineco through Grant No. FIS2011-26516, and by the NSF (Grants No. PIF-1211914 and No.PFC-1125844).Project
Gobierno de España. FIS2011-26516Editor's Version
http://dx.doi.org/10.1103/PhysRevB.91.064305Subjects
Local density; Vibrational quantum; Equilibrium; Voltage; FísicaRights
©2015 American Physical SocietyAbstract
We calculate the nonequilibrium local density of states on a vibrational quantum dot coupled to two electrodes at T = 0 using a numerically exact diagrammatic Monte Carlo method. Our focus is on the interplay between the electron-phonon interaction strength and the bias voltage. We find that the spectral density exhibits a significant voltage dependence if the voltage window includes one or more phonon sidebands. A comparison with well-established approximate approaches indicates that this effect could be attributed to the nonequilibrium distribution of the phonons. Moreover, we discuss the long transient dynamics caused by the electron-phonon coupling
Files in this item
Google Scholar:Albrecht, K. F.
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Martín-Rodero, A.
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Schachenmayer, J.
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Mühlbacher, L.
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