Kondo effect in quantum dots coupled to ferromagnetic leads with noncollinear magnetizations

Abstract

Non-equilibrium Green's function technique has been used to calculate spin-dependent electronic transport through a quantum dot in the Kondo regime. The dot is described by the Anderson Hamiltonian and is coupled either symmetrically or asymmetrically to ferromagnetic leads, whose magnetic moments are noncollinear. It is shown that the splitting of the zero bias Kondo anomaly in differential conductance decreases monotonically with increasing angle between magnetizations, and for antiparallel configuration it vanishes in the symmetrical case while remains finite in the asymmetrical one.

arXiv comment4 pages, 3 figures

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• Magnetoresistance of a quantum dot with spin-active interfaces
• Cotunneling through quantum dots coupled to magnetic leads: zero-bias anomaly for non-collinear magnetic configurations
• Kondo effect with non collinear polarized leads: a numerical renormalization group analysis
• The Influence of Magnetic Anisotropy on the Kondo Effect and Spin-Polarized Transport through Magnetic Molecules, Adatoms and Quantum Dots
• Kondo Resonance in the Presence of Spin-Polarized Currents
• Orbital Kondo effect in double quantum dots
• Spin splitting and Kondo effect in quantum dots coupled to noncollinear ferromagnetic leads
• Kondo effect in quantum dots coupled to ferromagnetic leads with noncollinear magnetizations: effects due to electron-phonon coupling
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• Spin-Polarized STM for a Kondo adatom
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• Spin-resolved dynamical conductance of correlated large-spin magnetic molecules
• Spin transport properties of a quantum dot coupled to ferromagnetic leads with noncollinear magnetizations
• Fano-Kondo Spin Filter
• Non-Zeeman splitting for a spin-resolved STM with a Kondo adatom in a spin-polarized two-dimensional electron gas
• Two-orbital Kondo effect in quantum dot coupled to ferromagnetic leads
• Dimensionality effects in the LDOS of ferromagnetic hosts probed via STM: spin-polarized quantum beats and spin filtering