Patent ID: 8217438

Claim:
A spin FET comprising: a first ferromagnetic layer having an invariable magnetization; a second ferromagnetic layer having a variable magnetization; a channel between the first and second ferromagnetic layers; a gate electrode formed on the channel via a gate insulation layer; a first conductive line which extends in a direction toward an upper portion of the gate electrode from a center of one of the first and second ferromagnetic layers and in a direction between 45 degrees and 90 degrees relative to an axis of hard magnetization of the second ferromagnetic layer, and whose one end in a longitudinal direction is connected to one of the first and second ferromagnetic layers; and a second conductive line connected to another end in a longitudinal direction of the first conductive line, wherein writing is executed by supplying spin-polarized electrons to the second ferromagnetic layer and applying a magnetic field from the first conductive line to the second ferromagnetic layer.