Shot noise in non-adiabatically driven nanoscale conductors

Details Shot noise in non-adiabatically driven nanoscale conductors Shot noise in non-adiabatically driven nanoscale conductors

2007-05-29

arxiv.org/abs/0705.4204v1

Ann. Phys. 16, 702 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

17 pages, 2 figures

Scientific paper

10.1002/andp.200710257

We investigate the noise properties of pump currents through molecular wires and coupled quantum dots. As a model we employ a two level system that is connected to electron reservoirs and is non-adiabatically driven. Concerning the electron-electron interaction, we focus on two limits: non-interacting electrons and strong Coulomb repulsion. While the former case is treated within a Floquet scattering formalism, we derive for the latter case a master equation formalism for the computation of the current and the zero-frequency noise. For a pump operated close to internal resonances, the differences between the non-interacting and the strongly interacting limit turn out to be surprisingly small.

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