Invention Grant
- Patent Title: Control of switching trajectory in spin orbit torque devices by micromagnetic configuration
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Application No.: US16447753Application Date: 2019-06-20
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Publication No.: US10916282B2Publication Date: 2021-02-09
- Inventor: Timothy Phung , Chirag Garg
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: Schmeiser, Olsen & Watts, LLP
- Agent Randall Bluestone
- Main IPC: G11C11/00
- IPC: G11C11/00 ; G11C11/16 ; H01F10/32 ; H01L43/04 ; H03K19/20 ; H03K19/18 ; H01L43/10 ; H01L27/22 ; G11C11/18 ; H01L43/06

Abstract:
A three-terminal device is disclosed having a magnetic tunnel junction (MTJ) and a spin orbit torque (SOT) generating layer. The MTJ has a first magnetic layer, a tunnel barrier layer underlying the first magnetic layer, and a second magnetic layer underlying the tunnel barrier, wherein the SOT generating layer is directly underlying the second magnetic layer. The second magnetic layer has a shape that is non-symmetrical, such that an average magnetization of a remnant state associated with the second magnetic layer has an in-plane component that is orthogonal to a current direction in the SOT generating layer.
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