Patent ID: 6667526
Filing Date: 2003-12-23
Classification: B82Y,G11C,H01L

Abstract:
A tunneling magnetoresistive storage unit comprising:a hollow cylinder-shaped first magnetic substance element whose magnetization direction is variable, the first magnetic substance element having one open end; a columnlike second magnetic substance element whose magnetization direction is fixed to one circumferential direction, the second magnetic substance element being formed inside the cylinder-shaped first magnetic substance element; and an insulator layer located between the first and second magnetic substance elements; wherein a tunneling current is flowed between the first and second magnetic substance elements to produce a rotating magnetic field for setting the magnetization direction of the first magnetic substance element to one of its circumferential directions, and wherein magnetoresistance due to a change in the magnetization direction of the first magnetic substance element with respect to the magnetization direction of the second magnetic substance element is used to represent binary data.