SPIN CURRENT CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a mechanism for controlling a spin current and to provide a circuit for controlling the spin current ON/OFF by using the spin current control mechanism or a logical circuit using the spin current.SOLUTION: The spin current control device includes: a spin injection section that injects a spin into a non-magnetic conductor 10; and a spin current control section that controls the spin current injected by the spin injection section and diffuses the same in the non-magnetic conductor. The spin current control section includes: a ferromagnetic substance 31 in which a magnetic wall 32 is inserted; and a current source 35 that flows a control current to the ferromagnetic substance 31 to thereby move the magnetic wall. The spin current is shut off by affecting an electric field generated on the spin current diffused in the non-magnetic conductor together with the movement of the magnetic wall.