Abstract
The effects of the spin–orbit interaction on the spin polarization of quantum dots in anAharonov–Bohm interferometer in the presence of Andreev reflection are investigatedtheoretically. The spin polarization of quantum dots appears on the resonance of Andreevreflection, which depends sensitively on the spin-dependent phase difference caused by thespin–orbit interaction. The amplitude and the sign of the spin polarization in the twoquantum dots can be controlled by the gate voltage, the bias and the magnetic flux.Furthermore, by tuning the magnetic flux the spin polarizations in the two quantum dotscan even have opposite signs from each other. This provides an efficient mechanism forcontrolling the amplitude and sign of the spin polarization in the two quantumdots.
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