Electronic Transport through a Quantum Dot Coupled to Non-Collinear Ferromagnetic Electrodes: The Kondo Regime

• Authors: R. Świrkowicz , M. Wilczyński , M. Wawrzyniak , J. Barnaś
• Languages of publication: EN

Abstracts

EN

Linear and non-linear conductance of quantum dots attached to magnetic leads is considered theoretically in the Kondo regime. The considerations are based on the non-equilibrium Green function formalism and the relevant equation of motion method. Splitting of the Kondo anomaly due to coupling of the dot to ferromagnetic electrodes, and its dependence on magnetic configuration of the system and on the lead's spin polarization is studied numerically.

Keywords

EN

73.23.Hk; 73.63.Kv

Discipline

• 73.23.Hk: Coulomb blockade; single-electron tunneling
• 73.63.Kv: Quantum dots

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 565-568

Dates

published

2008-01

received

2007-07-09

Contributors

author

R. Świrkowicz

• Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warszawa, Poland

author

M. Wilczyński

• Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warszawa, Poland

author

M. Wawrzyniak

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

author

J. Barnaś

• Department of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

References

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• 2. J. Martinek, Y. Utsumi, H. Imamura, J. Barnaś, S. Maekawa, J. Konig, G. Schon, Phys. Rev. Lett. 91, 127203 (2003)
• 3. R.Świrkowicz, M. Wilczyński, M. Wawrzyniak, J. Barnaś, Phys. Rev. B 73, 193312 (2006)
• 4. Y. Meir, N.S. Wingreen, P.A. Lee, Phys. Rev. Lett. 70, 260 (1993)
• 5. T.K. Ng, Phys. Rev. Lett. 70, 3635 (1993)

Identifiers

DOI

10.12693/APhysPolA.113.565