Quantum pumping in deformable quantum dots
Mesoscale and Nanoscale Physics
2010-10-05 v1
Abstract
The charge current pumped adiabatically through a deformable quantum dot is studied within the Green's function approach. Differently from the non-deformable case, the current shows an undefined parity with respect to the pumping phase \phi. The unconventional current-phase relation, analyzed in the weak pumping regime, is due to a dynamical phase shift \phi_D caused by the elastic deformations of the central region (classical phonons). The role of the quality factor Q of the oscillator, the effects induced by a mechanical resonance and the implications for current experiments on molecular systems are also discussed.
Cite
@article{arxiv.0909.0367,
title = {Quantum pumping in deformable quantum dots},
author = {F. Romeo and R. Citro},
journal= {arXiv preprint arXiv:0909.0367},
year = {2010}
}