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2008 | 113 | 1 | 553-556
Article title

Poor Man's Scaling and Green Function Analysis of the Kondo Anomaly in Single-Level Quantum Dots

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Abstracts
EN
Kondo effect in a single-level quantum dot attached to magnetic leads is studied theoretically by the "poor man's scaling" and non-equilibrium Green function methods. From the scaling equations we derive the Kondo temperature as a function of the model parameters - in particular as a function of the angle between magnetic moments. Transport characteristics, i.e. differential conductance and tunnel magnetoresistance associated with magnetization rotation, were calculated within the non-equilibrium Green function formalism based on the equation of motion method.
Keywords
Contributors
author
  • Department of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
  • Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
  • Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
author
  • 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
  • 1. A.C. Hewson, The Kondo Problem to Heavy Fermions, Cambridge University Press, 1993, p. 65
  • 2. Y. Meir, N.S. Wingreen, P.A. Lee, Phys. Rev. lett. 70, 2601 (1993)
  • 3. A. Kaminski, Yu.V. Nazarov, L.I. Glanzman, Phys. Rev. B 62, 8154 (2000)
  • 4. Y. Utsumi, H. Imamura, J. Barnaś, S. Maekawa, G. Schoen, Phys. Rev. Lett. 91, 127203 (2003)
  • 5. R. Lopez, D. Sanchez, Phys. Rev. Lett. 90, 116602 (2003)
  • 6. R.Świrkowicz, M. Wilczyński, M. Waewrzyniak, J. Barnaś, Phys. Rev. B 73, 193312 (2006)
  • 7. R.Świrkowicz, M. Wilczyński, J. Barnaś, J. Phys., Condens. Matter 18, 2291 (2006)
  • 8. P. Simon, P.S. Cornaglia, D. Feinberg, C.S. Baleairo, Phys. Rev. B 75, 045310 (2007)
  • 9. D. Matsubayashi, M. Eto, arXiv.org:cond-mat/0607548
  • 10. J.R. Schrieffer, P.A. Wolff, Phys. Rev. 149, 491 (1966)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv113n1135kz
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