Spin-Polarized Transprot through Double Quantum Dots

Details Spin-Polarized Transprot through Double Quantum Dots Spin-Polarized Transprot through Double Quantum Dots

2004-06-21

arxiv.org/abs/cond-mat/0406490v1

J. Phys. Soc. Jpn. 73, 2795 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 11 figures

Scientific paper

We investigate spin-polarized transport phenomena through double quantum dots coupled to ferromagnetic leads in series. By means of the slave-boson mean-field approximation, we calculate the conductance in the Kondo regime for two different configurations of the leads: spin-polarization of two ferromagnetic leads is parallel or anti-parallel. It is found that transport shows some remarkable properties depending on the tunneling strength between two dots. These properties are explained in terms of the Kondo resonances in the local density of states.

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