Kondo effect and spin filtering in coupled quantum dots

[摘要] The coherent transport through a set of N coupled quantum dots is considered in the limit of infinite intradot and finite or infinite interdot interactions. The mean field slave boson approach and the equation of motion method are used. For the full spin-orbit degenerate case the low energy behavior is characterized by an SU(2N) symmetry with entangled spin and charge correlations. The magnetic field breaks the spin degeneracy, but for the special choices of gate voltages the degeneracy might be recovered in one spin channel allowing the spin filtering. (c) 2006 Elsevier B.V. All rights reserved.

[发布日期] 2006-10-26

[效力级别]  Proceedings Paper

[关键词] electronic transport in nanoscopic systems;Kondo effect