Patent ID: 7755932

Claim:
A spin memory comprising: a bit line and a word line; a magneto-resistive effect element that is disposed between the bit line and the word line; a first variable resistance element that is connected to one end of the bit line; a second variable resistance element that is connected to the other end of the bit line; a third variable resistance element that is disposed between the magneto-resistive effect element and the word line; a first voltage applying unit that applies voltage to the first variable resistance element; a second voltage applying unit that applies voltage to the second variable resistance element; and a third voltage applying unit that applies voltage to the third variable resistance element, wherein the magneto-resistive effect element including a first ferromagnetic layer whose magnetization direction is variable, a second ferromagnetic layer whose magnetization direction is fixed, and an intermediate layer that is disposed between the first ferromagnetic layer and the second ferromagnetic layer, and wherein when a writing operation is performed, based on a predetermined resistance value, the magnetization of the first ferromagnetic layer is reversed by a spin torque that is generated by flowing current between the first voltage applying unit and the second voltage applying unit and between the bit line and the third voltage applying unit.