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handle: 10261/95387
Spin transport properties of a triple quantum dot shuttle system are analyzed in the presence of spin-orbit interaction. We calculate the spin current through the device as a function of the bias voltage detuning. We find that new resonances in the current through the shuttle appear due to the presence of spin-orbit interaction, and the states involved in the conduction process are identified. Also, spin current polarization is analyzed as a function of tunnel coupling and detuning, and conditions are found where the device can act as a spin filter. © 2013 American Physical Society.
We gratefully acknowledge support from projects UNAM-DGAPA PAPIIT IN112012 (E.C.), P/PIFI 2011-02MSU0020A-08 (J.V.), MAT 2011-24331 and ITN Grant No. 234970 EU (G.P.).
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