Storage element and memory
First Claim
1. A storage device comprising:
- a first magnetization layer having a first magnetization state;
a second magnetization layer having a second magnetization state;
an intermediate layer provided between the first magnetization layer and the second magnetization layer;
a spin absorption layer configured to increase spin pumping of the first magnetization layer; and
a spin barrier layer configured to suppress spin pumping of the first magnetization layer,wherein the second magnetization layer includes a first layer having a first magnetization direction and a second layer having a second magnetization direction, andwherein the spin barrier layer is provided between the spin absorption layer and the first magnetization layer.
1 Assignment
0 Petitions
Accused Products
Abstract
A storage element includes a storage layer, a fixed magnetization layer, a spin barrier layer, and a spin absorption layer. The storage layer stores information based on a magnetization state of a magnetic material. The fixed magnetization layer is provided for the storage layer through a tunnel insulating layer. The spin barrier layer suppresses diffusion of spin-polarized electrons and is provided on the side of the storage layer opposite the fixed magnetization layer. The spin absorption layer is formed of a nonmagnetic metal layer causing spin pumping and provided on the side of the spin barrier layer opposite the storage layer. A direction of magnetization in the storage layer is changed by passing current in a layering direction to inject spin-polarized electrons so that information is recorded in the storage layer and the spin barrier layer includes at least a material selected from oxides, nitrides, and fluorides.
-
Citations
18 Claims
-
1. A storage device comprising:
-
a first magnetization layer having a first magnetization state; a second magnetization layer having a second magnetization state; an intermediate layer provided between the first magnetization layer and the second magnetization layer; a spin absorption layer configured to increase spin pumping of the first magnetization layer; and a spin barrier layer configured to suppress spin pumping of the first magnetization layer, wherein the second magnetization layer includes a first layer having a first magnetization direction and a second layer having a second magnetization direction, and wherein the spin barrier layer is provided between the spin absorption layer and the first magnetization layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A memory comprising:
-
a storage device; and at least two lines that intersect with each other, wherein the storage device includes a first magnetization layer having a first magnetization state; a second magnetization layer having a second magnetization state; an intermediate layer provided between the first magnetization layer and the second magnetization layer; a spin absorption layer configured to increase spin pumping of the first magnetization layer; and a spin barrier layer configured to suppress spin pumping of the first magnetization layer, wherein the second magnetization layer includes a first layer having a first magnetization direction and a second layer having a second magnetization direction, and wherein the spin barrier layer is provided between the spin absorption layer and the first magnetization layer. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification