Invention Grant
- Patent Title: Spin-orbit torque (SOT) magnetic memory with voltage or current assisted switching
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Application No.: US16223080Application Date: 2018-12-17
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Publication No.: US10600465B1Publication Date: 2020-03-24
- Inventor: Satoru Araki
- Applicant: SPIN MEMORY, INC.
- Applicant Address: US DE Wilmington
- Assignee: SPIN MEMORY, INC.
- Current Assignee: SPIN MEMORY, INC.
- Current Assignee Address: US DE Wilmington
- Agency: Morgan, Lewis & Bockius LLP
- Main IPC: G11C11/16
- IPC: G11C11/16 ; H01L27/22

Abstract:
A magnetic storage device includes a first wire extending along a first direction and a plurality of spin orbit torque magnetic random access memory (SOT-MRAM) devices. Each of the plurality of SOT-MRAM devices is disposed at a respective position along the first wire. The magnetic storage device further includes write circuitry, including: a first transistor coupled to the first wire to apply a first write current along the first wire in the first direction; and a second transistor to select an individual SOT-MRAM device and apply a second write current to the individual SOT-MRAM device concurrently with the application of the first write current. The second write current is along an axis of the individual SOT-MRAM device. The magnetic storage device further includes readout circuitry to read a data value stored by the individual SOT-MRAM device.
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