Superconducting transport through a vibrating molecule

Details Superconducting transport through a vibrating molecule Superconducting transport through a vibrating molecule

2006-03-08

arxiv.org/abs/cond-mat/0603209v2

Phys. Rev. B 73, 214501 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 5 figures, version contains now more details, accepted by PRB

Scientific paper

10.1103/PhysRevB.73.214501

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.

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