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Orbital Kondo effect and spin polarized transport through quantum dots
Author(s) -
Lipiński S.,
Krychowski D.
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200562416
Subject(s) - quantum dot , kondo effect , condensed matter physics , physics , spin (aerodynamics) , degeneracy (biology) , resonance (particle physics) , magnetic field , quantum mechanics , electron , bioinformatics , biology , thermodynamics
The coherent spin dependent transport through a set of two capacitively coupled quantum dots placed in a magnetic field is considered within the equation of motion method. The magnetic field breaks the spin degeneracy. For special choices of gate voltages the dot levels are tuned to resonance and the orbital Kondo effect results. For different Zeemann splittings at the dots the Kondo resonance can be formed for only one spin channel. In this case the system operates as an efficient spin filter. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)