Kondo effect in quantum dots coupled to ferromagnetic leads

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dc.creatorMartinek, J.
dc.creatorUtsumi, Y.
dc.creatorImamura, H.
dc.creatorBarnas, J.
dc.creatorMaekawa, S.
dc.creatorKönig, J.
dc.creatorSchön, G.
dc.date2002-09-30
dc.date2004-01-29
dc.date.accessioned2026-07-07T02:47:31Z
dc.date.available2026-07-07T02:47:31Z
dc.descriptionWe study the Kondo effect in a quantum dot which is coupled to ferromagnetic leads and analyse its properties as a function of the spin polarization of the leads. Based on a scaling approach we predict that for parallel alignment of the magnetizations in the leads the strong-coupling limit of the Kondo effect is reached at a finite value of the magnetic field. Using an equation-of-motion technique we study nonlinear transport through the dot. For parallel alignment the zero-bias anomaly may be split even in the absence of an external magnetic field. For antiparallel spin alignment and symmetric coupling, the peak is split only in the presence of a magnetic field, but shows a characteristic asymmetry in amplitude and position.
dc.description5 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0210006
dc.identifierhttp://arxiv.org/abs/cond-mat/0210006
dc.identifierPhys. Rev. Lett. 91, 127203 (2003)
dc.identifierdoi:10.1103/PhysRevLett.91.127203
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/20038
dc.subjectMesoscale and Nanoscale Physics
dc.titleKondo effect in quantum dots coupled to ferromagnetic leads
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