Operation method of neural network element using spin-orbit torque
US12361267B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2019 |
| Grant date | Jul 15, 2025 |
| Priority date | — |
| Expiry date | Nov 18, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N52/80
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an operation method of a neural network element using a Hall voltage. The neural network element has a hole pattern portion, and the hole pattern portion has a cross shape. When a pulse current is applied, horizontal magnetic anisotropy is formed in a ferromagnetic layer by means of spin-orbit torque, and when an external magnetic field in a direction perpendicular to the pulse current is applied, the inversion of magnetization occurs by means of additional torque. The movement of a magnetic domain wall is performed by the inversion of magnetization, spin electrons applied thereby are scattered, and a Hall voltage is generated according to the anomalous Hall effect. The generated Hall voltage increases according to the number of applications of the pulse current or pulse voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.