Patent ID: 11942129
Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 12:
13. A method of toggle switching a magnetic tunnel junction that comprises a fixed ferromagnet layer, a free ferromagnet layer, an insulating tunnel barrier between the fixed ferromagnet layer and free ferromagnet layer, and a heavy metal layer adjacent the free ferromagnet layer, the method comprising:
applying a unidirectional electric current pulse between a first write terminal and a second write terminal connected to different sections of the heavy metal layer;
wherein the fixed ferromagnet layer comprises a fixed magnetization along an easy axis approximately normal to an interface between the fixed ferromagnet layer and the insulating tunnel barrier, and wherein the free ferromagnet layer comprises a bistable magnetization along the easy axis, wherein the bistable magnetization can switch between a parallel state and an anti-parallel state with the fixed magnetization of the fixed ferromagnet layer; and
wherein the unidirectional electric current pulse toggles the bistable magnetization of the free ferromagnet layer between the parallel and anti-parallel state, thereby switching an electrical resistance state of the magnetic tunnel junction regardless of which state the free ferromagnet layer is in upon application of the unidirectional electric current pulse.