Abstract
Using the tight-binding model approximation, this paper investigates theoretically spin-dependent quantum transport through an Aharonov–Bohm (AB) interferometer. An external magnetic field is applied to produce the spin-polarization and spin current. The AB interferometer, acting as a spin splitter, separates the opposite spin polarization current. By adjusting the energy and the direction of the magnetic field, large spin-polarized current can be obtained.
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