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采用Keldysh非平衡态格林函数方法和运动学方程方法,我们研究了耦合于铁磁极的T型双量子点自旋极化输运。研究发现由于Kondo效应和Fano效应的共同作用,在平衡和非平衡情况下,系统的态密度都随着铁磁电极的自旋极化强度的变化而发生变化,这样的一个可以包含单个和双个量子点的系统能为将来自旋阀实验上的进步提供更多的可供参考的的方法。
Using the Keldysh non-equilibrium Green’s function method and the kinematic equation method, we investigate the spin-polarized transport of a T-type double quantum dot coupled to a ferromagnetic pole. The results show that due to the combination of Kondo effect and Fano effect, the state density of the system varies with the spin polarization of the ferromagnetic electrode under both balanced and unbalanced conditions. Such a single system may include single and double Quantum dot system can provide more reference for future experimental progress of spin-valve.