Article ID Journal Published Year Pages File Type
1803230 Journal of Magnetism and Magnetic Materials 2009 7 Pages PDF
Abstract

Spin and charge transport through a quantum dot coupled to external nonmagnetic leads is analyzed theoretically in terms of the non-equilibrium Green function formalism based on the equation of motion method. The dot is assumed to be subject to spin and charge bias, and the considerations are focused on the Kondo effect in spin and charge transport. It is shown that the differential spin conductance as a function of spin bias reveals a typical zero-bias Kondo anomaly which becomes split when either magnetic field or charge bias are applied. Significantly different behavior is found for mixed charge/spin conductance. The influence of electron–phonon coupling in the dot on tunneling current as well as on both spin and charge conductance is also analyzed.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
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