SPIN FILTER AND SPIN STATE SEPARATING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a spin filter capable of obtaining a sufficient deflection angle of the spin for separating a different spin state which a carrier traveling in a semiconductor has, and to provide a method for separating the spin state. SOLUTION: The spin filter comprises a semiconductor channel comprising a carrier confined within two dimensional region in which a motion space of the carrier in one space dimension direction is negligible small comparing to a motion space in the other two space dimension directions, a space potential modulating means for modulating the potential in the space including the semiconductor channel, a carrier generating means for generating a carrier traveling in the semiconductor in answer to the potential modulated by the space potential modulating means, and an inhomogeneous magnetic field applying means for applying the inhomogeneous magnetic field to the region including at least part of the semiconductor channel through which the carrier generated by the carrier generating means passes. COPYRIGHT: (C)2005,JPO&NCIPI