Effects of current on nanoscale ring-shaped magnetic tunnel junctions

Effects of current on nanoscale ring-shaped magnetic tunnel junctions

We report the observation and micromagnetic analysis of current-driven magnetization switching in nanoscale ring-shaped magnetic tunnel junctions. When the electric current density exceeds a critical value of the order of \(6\times 10^{6}\)A/cm\(^2\), the magnetization of the two magnetic rings can...

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Veröffentlicht in:arXiv.org 2008-04
Hauptverfasser: Hong-Xiang, Wei, He, Jiexuan, Zhen-Chao, Wen, Xiu-Feng, Han, Wen-Shan Zhan, Zhang, Shufeng
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Electrical junctions
Magnetic switching
Magnetization
Physics - Materials Science
Physics - Mesoscale and Nanoscale Physics
Tunnel junctions
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Zhen-Chao, Wen
Xiu-Feng, Han
Wen-Shan Zhan
Zhang, Shufeng
description We report the observation and micromagnetic analysis of current-driven magnetization switching in nanoscale ring-shaped magnetic tunnel junctions. When the electric current density exceeds a critical value of the order of \(6\times 10^{6}\)A/cm\(^2\), the magnetization of the two magnetic rings can be switched back and forth between parallel and antiparallel onion states. Theoretical analysis and micromagnetic simulation show that the dominant mechanism for the observed current-driven switching is the spin torque rather than the current-induced circular Oersted field.
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subjects Electrical junctions
Magnetic switching
Magnetization
Physics - Materials Science
Physics - Mesoscale and Nanoscale Physics
Tunnel junctions
title Effects of current on nanoscale ring-shaped magnetic tunnel junctions
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