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- W1966557463 abstract "We study the Kondo effect in a quantum dot coupled to half-metallic ferromagnetic electrodes in the regime of strong on-dot correlations. Using the equation of motion technique for nonequilibrium Green functions in the slave boson representation we show that the Kondo effect is not completely suppressed for anti-parallel leads magnetization. In the parallel configuration there is no Kondo effect but there is an effect associated with elastic cotunneling which in turn leads to similar behavior of the local (on-dot) density of states (LDOS) as the usual Kondo effect. Namely, the LDOS shows the temperature dependent resonance at the Fermi energy which splits with the bias voltage and the magnetic field. Moreover, unlike for non-magnetic or not fully polarized ferromagnetic leads the only minority spin electrons can form such resonance in the density of states. However, this resonance cannot be observed directly in the transport measurements and we give some clues how to identify the effect in such systems." @default.
- W1966557463 created "2016-06-24" @default.
- W1966557463 creator A5061131318 @default.
- W1966557463 date "2006-07-06" @default.
- W1966557463 modified "2023-10-16" @default.
- W1966557463 title "Residual Kondo effect in quantum dot coupled to half-metallic ferromagnets" @default.
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- W1966557463 doi "https://doi.org/10.1088/0953-8984/18/29/029" @default.
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