SEMINAIRE MERCREDI 14 JUIN 2006
14 heures
Salle Séminaire 5
Centre de Physique Théorique
Marseille-Luminy

Thierry Martin
CPT

Titre: Transport de paires de Cooper ˆ travers une molŽcule qui vibre

Abstract: Nonequilibrium electronic transport through a molecular
level weakly coupled to a single coherent phonon/vibration mode has
been studied for superconducting leads. The Keldysh Green function
formalism is used to compute the current for the entire bias voltage
range. In the subgap regime, Multiple Andreev Reflection (MAR)
processes accompanied by phonon emission cause rich structure near the
onset of MAR channels, including an even-odd parity effect that can be
interpreted in terms of an inelastic MAR ladder picture. Thereby we
establish a connection between the Keldysh formalism and the Landauer
scattering approach for inelastic MAR.