Abstract
On the basis of the Rashba spin–orbit interaction, we propose and investigate a mesoscopicspin interferometer for generating spin polarized current. We find that the output current isin general spin polarized if the interferometer is a multi-terminal device with twonon-equal-length arms. We study the dependence of the spin polarization andoutput probability on the system parameters, and find that both of them can bequite large, simultaneously. The suggested device does not contain any magneticmaterial or magnetic field; moreover, the spin–orbit interaction can be eitheruniform or non-uniform. This spin device can be realized with today’s technology.
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