SOUTO, R Seoane; AVRILLER, Rémi; YEYATI, A Levy; MARTÍN-RODERO, A

doi:10.1088/1367-2630/aad99d

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SOUTO, R Seoane
Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center [IFIMAC]

AVRILLER, Rémi
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

YEYATI, A Levy
Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center [IFIMAC]

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New Journal of Physics. 2018-08-01, vol. 20, n° 8, p. 083039 (1-16)

Institute of Physics: Open Access Journals

Résumé en anglais

We present an analysis of the transient electronic and transport properties of a nanojunction in the presence of electron-electron and electron-phonon interactions. We introduce a novel numerical approach which allows for an efficient evaluation of the non-equilibrium Green functions in the time domain. Within this approach we implement different self-consistent diagrammatic approximations in order to analyze the system evolution after a sudden connection to the leads and its convergence to the steady state. These approximations are tested by comparison with available numerically exact results, showing good agreement even for the case of large interaction strength. In addition to its methodological advantages, this approach allows us to study several issues of broad current interest like the build up in time of Kondo correlations and the presence or absence of bistability associated with electron-phonon interactions. We find that, in general, correlation effects tend to remove the possible appearance of charge bistability.< Réduire

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nanoelectronics

molecular electronics

interactions at the nanoscale

non-equilibrium phenomena

dynamical properties

Kondo effect

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Transient dynamics in interacting nanojunctions within self-consistent perturbation theory

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