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Current-induced synchronized switching of magnetization

Published

Author(s)

Kyung Jin Lee, Soo-Man Seo

Abstract

We propose a multilayer structure that allows a reduced switching current with maintaining high thermal stability of the magnetization. It consists of a perpendicular polarizer, a perpendicular free-layer, and an additional free-layer having in-plane magnetization. When the current runs perpendicular to the structure, the in-plane free-layer undergoes a precession motion and supplies an internal rf field to the perpendicular free-layer, resulting in a reduced switching current for one current polarity. For the other polarity, the in-plane free-layer almost saturates perpendicular to the plane and acts as another perpendicular polarizer, which also reduces the switching current.
Citation
Applied Physics Letters
Volume
101
Issue
6

Keywords

Current-induced magnetization switching, spin-transfer torque, synchronization
Created August 7, 2012, Updated February 19, 2017