Pumped shot noise in adiabatically modulated graphene-based double-barrier structures

Details Pumped shot noise in adiabatically modulated graphene-based double-barrier structures Pumped shot noise in adiabatically modulated graphene-based double-barrier structures

2011-07-22

arxiv.org/abs/1107.4412v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

Quantum pumping processes are accompanied by considerable quantum noise. We investigated the pumped shot noise (PSN) properties in adiabatically modulated graphene-based double-barrier structures. General expressions for adiabatically PSN in phase-coherent mesoscopic conductors are derived based on the scattering approach. It is found that comparing with the Poisson processes, the PSN is dramatically enhanced where the dc pumped current changes flow direction, which demonstrates the effect of the Klein paradox.

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