Dynamical properties of a vibrating molecular quantum dot in a Josephson junction

Details Dynamical properties of a vibrating molecular quantum dot in a Josephson junction Dynamical properties of a vibrating molecular quantum dot in a Josephson junction

2009-12-09

arxiv.org/abs/0912.1704v2

Phys. Rev. B, 81, 155440 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 2 figures, Phys. Rev. B

Scientific paper

10.1103/PhysRevB.81.155440

We investigate dynamical transport aspects of a combined nanomechanical-superconducting device in which Cooper pair tunneling interfere with the mechanical motion of a vibrating molecular quantum dot embedded in a Josephson junction. Six different regimes for the tunneling dynamics are identified with respect to the electron level and the charging energy in the quantum dot. In five of those regimes new time-scales are introduced which are associated with the energies of the single electron transitions within the quantum dot, while there is one regime where the internal properties of the quantum dot are static.

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