Phonon-Assisted Electronic Transport through Double Quantum Dot System Coupled to Ferromagnetic Leads

• Authors: P. Trocha , W. Rudziński
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

72.25.Mk; 73.23.Hk; 73.63.Kv

Discipline

• 73.23.Hk: Coulomb blockade; single-electron tunneling
• 72.25.Mk: Spin transport through interfaces
• 73.63.Kv: Quantum dots

• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 124
• Issue: 5
• Pages: 843-845

Dates

published

2013-11

Contributors

author

P. Trocha

• Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

W. Rudziński

• Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

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Identifiers

DOI

10.12693/APhysPolA.124.843