Adiabatic quantum pumping and rectification effects in interacting quantum dots

Details Adiabatic quantum pumping and rectification effects in interacting quantum dots Adiabatic quantum pumping and rectification effects in interacting quantum dots

2009-03-13

arxiv.org/abs/0903.2362v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

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Scientific paper

We derive a formula describing the adiabatically pumped charge through an interacting quantum dot within the scattering matrix and Green's function approach. We show that when the tunneling rates between the leads and the dot are varied adiabatically in time, both in modulus and phase, the current induced in the dot consists of two terms, the pumping current and a rectification-like term. The last contribution arises from the time-derivative of the tunneling phase and can have even or odd parity with respect to the pumping phase \varphi. The rectification-like term is also discussed in relation to some recent experiments in quantum-dots.

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