Core contribution to magnetotransport of ferromagnetic dots in vortex state

A. Segal; A. Gerber

doi:10.1063/1.3698504

Core contribution to magnetotransport of ferromagnetic dots in vortex state

A. Segal^*, A. Gerber

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

We study the influence of the vortex core on magnetotransport of ferromagnetic dots in a vortex state. The extraordinary Hall effect generated in the core region has a different field symmetry compared to contributions of anisotropic magnetoresistance and the planar Hall effect, which can be used to detect chirality and polarity of the vortex. We propose a method for realization of two-bit per dot magnetic random access memory, in which two states are contributed by clockwise and counter-clockwise chirality and two by up and down core polarity. Dependence of the signal on vortex location, core diameter, and other parameters is discussed.

Original language	English
Article number	073902
Journal	Journal of Applied Physics
Volume	111
Issue number	7
DOIs	https://doi.org/10.1063/1.3698504
State	Published - 1 Apr 2012

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abstract = "We study the influence of the vortex core on magnetotransport of ferromagnetic dots in a vortex state. The extraordinary Hall effect generated in the core region has a different field symmetry compared to contributions of anisotropic magnetoresistance and the planar Hall effect, which can be used to detect chirality and polarity of the vortex. We propose a method for realization of two-bit per dot magnetic random access memory, in which two states are contributed by clockwise and counter-clockwise chirality and two by up and down core polarity. Dependence of the signal on vortex location, core diameter, and other parameters is discussed.",

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note = "Funding Information: The work was supported in part by the Israel Science Foundation grant No. 633/06 and by the Air Force Office of Scientific Research, Air Force Material Command, USAF grant No. FA8655-11-1-3081. We acknowledge Y. Windsor for help in the manuscript preparation. ",

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Core contribution to magnetotransport of ferromagnetic dots in vortex state

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