Tunnel Magnetoresistance for Phonon-Assisted Tunneling through Quantum Dots

• Authors: W. Rudziński
• Languages of publication: EN

Abstracts

EN

Spin-polarized transport through a single-level quantum dot interacting with a local phonon mode is studied in the frame of the nonequilibrium Green-function technique. It is shown that strong electron-phonon interaction gives rise to a significant current suppression, to additional resonance peaks in the differential conductance as well as to oscillations of the tunnel magnetoresistance. Also, a phonon-induced mechanism leading to a minimum in tunnel magnetoresistance at zero bias voltage is explained.

Keywords

EN

72.25.Mk; 73.63.Kv; 73.23.Hk

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: 2008
• Volume: 113
• Issue: 1
• Pages: 587-590

Dates

published

2008-01

received

2007-07-09

Contributors

author

W. Rudziński

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

References

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• 5. G.D. Mahan, Many-Particle Physics, Plenum Press, New York 2000
• 6. A.-P. Jauho, N.S. Wingreen, Y. Meir, Phys. Rev. B 50, 5528 (1994)

Identifiers

DOI

10.12693/APhysPolA.113.587