Abstract
It is predicted that a spin signal can be converted into a change of the electric potential. This effect arises when spin-polarized electrons from a nonmagnetic circuit N penetrate into a magnetized magnetic attachment M with Zeeman splitting of the electron spectrum. Since M possesses a high density of spin states with the same direction of the spin, the penetration of spin-polarized electrons into M results in the appearance of an electric double layer at the N–M boundary and therefore a jump in the electric potential between M and N. The predicted effect can be used for direct detection of a spin signal in nonmagnetic metals and semiconductors as well as for solving a number of problems of spintronics because of the ease with which an electric field can be controlled by currents in semiconductors.
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