Current-induced synchronized switching of magnetization

Soo Man Seo; Kyung Jin Lee

doi:10.1063/1.4742917

Current-induced synchronized switching of magnetization

Soo Man Seo, Kyung Jin Lee

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

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.

Original language	English
Article number	062408
Journal	Applied Physics Letters
Volume	101
Issue number	6
DOIs	https://doi.org/10.1063/1.4742917
Publication status	Published - 2012 Aug 6

Bibliographical note

Funding Information:
This work was supported by the NRF (2010-0023798) the MKE/KEIT (2009-F-004-01). K. J. Lee acknowledges support under the Cooperative Research Agreement between the University of Maryland and the National Institute of Standards and Technology Center for Nanoscale Science and Technology, Award 70NANB10H193, through the University of Maryland.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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AB - 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.

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Current-induced synchronized switching of magnetization

Abstract

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