Analysis of the Kondo Resonance in a Single Quantum Dot Asymmetrically Coupled to Ferromagnetic Electrodes with Non-Collinear Magnetizations

• Authors: M. Wawrzyniak
• Languages of publication: EN

Abstracts

EN

The Kondo effect is studied theoretically in the framework of the non-equilibrium Green function formalism. The system under consideration consists of a single quantum dot asymmetrically coupled to ferromagnetic electrodes, whose magnetic moments are non-collinear. The spin-dependent density of states, as well as the transport characteristics such as differential conductance and tunneling magnetoresistance through the system are obtained using the equation of motion method. Numerical illustration of the mentioned quantities for several magnetic configurations and coupling strengths is presented and discussed.

Keywords

EN

72.15.Qm; 73.21.La; 73.23.Hk

Discipline

• 72.15.Qm: Scattering mechanisms and Kondo effect(see also 75.20.Hr Local moments in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions in magnetic properties and materials)
• 73.23.Hk: Coulomb blockade; single-electron tunneling
• 73.21.La: Quantum dots

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 1
• Pages: 303-305

Dates

published

2009-01

Contributors

author

M. Wawrzyniak

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

References

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• 6. J. Martinek, Y. Utsumi, H. Imamura, J. Barnaś, S. Maekawa, J. Koenig, G. Schoen, Phys. Rev. Lett. 91, 127203 (2003)

Identifiers

DOI

10.12693/APhysPolA.115.303