DOAJ Open Access 2023

Field‐Free Spin‐Orbit Torque Switching of Perpendicular Magnetization by Making Full Use of Spin Hall Effect

Yuhang Song Zhiming Dai Long Liu Jinxiang Wu Tingting Li +3 lainnya

Abstrak

Abstract Field‐free switching is a critical issue for spin‐orbit torque‐induced magnetic random‐access memory (SOT‐MRAM) with perpendicular magnetic anisotropic (PMA) towards application. If only the spin‐polarized electrons along the y‐direction (σy) are used, deterministic switching cannot be achieved, as the electron polarization direction and easy magnetization direction are orthogonal. In this work, z‐direction polarized electrons (σz) produced by the spin Hall effect are utilized to provide the switching direction and σy provides the propulsion of magnetic reorientation. With the cooperation of σy and σz by the spin Hall effect, field‐free switching is achieved. To combine with magnetic tunnel junction (MTJ), a model is proposed, in which heavy metals providing σz are deposited on MTJ with asymmetric writing line widths. This model retains the characteristics of read‐write separation and realizes deterministic switching based on SOT.

Topik & Kata Kunci

Electric apparatus and materials. Electric circuits. Electric networks Physics

Penulis (8)

Yuhang Song

Zhiming Dai

Long Liu

Jinxiang Wu

Tingting Li

Xiaotian Zhao

Wei Liu

Zhidong Zhang

Format Sitasi

APA MLA BibTeX

Song, Y., Dai, Z., Liu, L., Wu, J., Li, T., Zhao, X. et al. (2023). Field‐Free Spin‐Orbit Torque Switching of Perpendicular Magnetization by Making Full Use of Spin Hall Effect. https://doi.org/10.1002/aelm.202200987

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.1002/aelm.202200987
Akses: Open Access ✓