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2013 | 124 | 5 | 843-845
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Phonon-Assisted Electronic Transport through Double Quantum Dot System Coupled to Ferromagnetic Leads

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Phonon-assisted electronic tunneling is studied through a double quantum dot coupled in parallel to ferromagnetic electrodes. The current-voltage characteristics for the system are derived within the nonequilibrium Green function technique based on equation of motion. It is found that additional phonon-induced resonance peaks appear in the spectral function on both sides of the main resonances corresponding to the quantum dot energy levels. It is shown that the "molecular-like" resonances are reproduced in the phonon side bands in the differential conductance. A significant phonon-induced enhancement of tunnel magnetoresistance as well as tunnel magnetoresistance oscillations are also predicted.
  • Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
  • Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
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