Poor Man's Scaling Approach to the Kondo Effect in a Single Quantum Dot Asymmetrically Attached to Ferromagnetic Leads with Non-Collinear Magnetizations

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

Abstracts

EN

The poor man's scaling technique is applied to the problem of electronic transport through a single quantum dot (with finite Coulomb repulsion) asymmetrically coupled to electrodes. The considered quantum dot is coupled to ferromagnetic electrodes, whose magnetic moments are non-collinear. The analysis and numerical illustration of spin splitting of the dot level as well as of the Kondo temperature on the coupling asymmetry is presented and discussed.

Keywords

EN

75.20.Hr; 72.15.Qm; 72.25.-b; 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)
• 72.25.-b: Spin polarized transport(for spin polarized transport devices, see 85.75.-d)
• 73.23.Hk: Coulomb blockade; single-electron tunneling
• 75.20.Hr: Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions(for Kondo effect and scattering mechanisms in electronic conduction, see 72.15.Qm and 72.10.Fk)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 5
• Pages: 1421-1424

Dates

published

2008-11

received

2008-06-07

Contributors

author

M. Wawrzyniak

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

References

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• 3. R.Świrkowicz, M. Wilczyński, M. Wawrzyniak, J. Barnaś, Phys. Rev. B 73, 193312 (2006)
• 4. D. Matsubayashi, M. Eto, Phys. Rev. B 75, 165319 (2007)
• 5. A.C. Hewson, The Kondo Problem to Heavy Fermions, Cambridge University Press, Cambridge UK 1993
• 6. P. Simon, P.S. Cornaglia, D. Feinberg, C.A. Balseiro, Phys. Rev. B 75, 045310 (2007)
• 7. J.R. Schrieffer, P.A. Wolff, Phys. Rev. 149, 491 (1966)

Identifiers

DOI

10.12693/APhysPolA.114.1421