Spin current generation and detection by a double quantum dot structure

J. P. Dahlhaus; S. Maier; A. Komnik

doi:10.1103/physrevb.81.075110

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arXiv · 0909.2762

Spin current generation and detection by a double quantum dot structure

J. P. Dahlhaus·S. Maier·A. Komnik

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Abstract

We propose a device acting as a spin valve which is based on a double quantum dot structure with parallel topology. Using the exact analytical solution for the noninteracting case we argue that, at a certain constellation of system parameters and externally applied fields, the electric current through the constriction can become almost fully spin-polarized. We discuss the influence of the coupling asymmetry, finite temperatures and interactions on the efficiency of the device and make predictions for the experimental realization of the effect.

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J. P. Dahlhaus, S. Maier, A. Komnik. 2009-09-15. Spin current generation and detection by a double quantum dot structure. https://doi.org/10.1103/physrevb.81.075110

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