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Current-induced synchronized switching of magnetization

2012; American Institute of Physics; Volume: 101; Issue: 6 Linguagem: Inglês

10.1063/1.4742917

1520-8842

Soo-Man Seo, Kyung‐Jin Lee,

Magnetic Properties and Applications

We investigate current-induced magnetization switching for a multilayer structure that allows a reduced switching current while maintaining high thermal stability of the magnetization. The structure 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 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.