Patent ID: 9647030
Date: 2017-05-09
CPC Classifications: G11C,H01L

Claim:
1. A magnetic memory device, comprising: a plurality of magnetic memory cells, each including a fixed magnetic layer, an insulating layer and a free magnetic layer; wherein the magnetic memory device comprises a conductive wire provided adjacent to the free magnetic layer to apply an in-plane current to the magnetic memory cell; and an element configured to independently supply a voltage to each of the magnetic memory cells, wherein the fixed magnetic layer is a film having a fixed magnetization orientation and made of material magnetized in a direction parallel to a film surface, wherein the free magnetic layer is a film having a variable magnetization orientation and made of material magnetized in a direction parallel to a film surface, and wherein a magnetization orientation of a selected magnetic memory cell is selectively varied by decreasing an effective magnetic anisotropy of the free magnetic layer, and this is accomplished by the voltage that is selectively applied to a free magnetic layer when a spin Hall spin transfer torque is produced on an interface between the conductive wire and the free magnetic layer by an applied spin current, which is supplied by the in-plane current flowing in the conductive wire.