Kondo effect with non collinear polarized leads: a numerical renormalization group analysis

Abstract

The Kondo effect in quantum dots attached to ferromagnetic leads with general polarization directions is studied combining poor man scaling and Wilson's numerical renormalization group methods. We show that polarized electrodes will lead in general to a splitting of the Kondo resonance in the quantum dot density of states except for a small range of angles close to the antiparallel case. We also show that an external magnetic field is able to compensate this splitting and restore the unitary limit. Finally, we study the electronic transport through the device in various limiting cases.

6 pages, 4 figures, final version

References in corpus (7)

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• Kondo effect in quantum dots coupled to ferromagnetic leads
• NRG study of the Kondo effect in the presence of itinerant-electron ferromagnetism
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Cited by in corpus (9)

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• Spin effects in single electron tunneling
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• Kondo Resonance in the Presence of Spin-Polarized Currents
• Kondo effect in quantum dots coupled to ferromagnetic leads with noncollinear magnetizations: effects due to electron-phonon coupling
• Spin-polarized tunneling microscopy and the Kondo effect
• Spin transport properties of a quantum dot coupled to ferromagnetic leads with noncollinear magnetizations
• Spin-orbital Kondo decoherence by environmental effects in capacitively coupled quantum dot devices
• Two-orbital Kondo effect in quantum dot coupled to ferromagnetic leads