Effect of enhanced damping due to spin-motive force on field-driven domain wall motion

Jung Hwan Moon; Soo Man Seo; Kyoung Jin Lee

doi:10.1109/TMAG.2010.2041909

Effect of enhanced damping due to spin-motive force on field-driven domain wall motion

Jung Hwan Moon, Soo Man Seo, Kyoung Jin Lee

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

5 Citations (Scopus)

Abstract

Temporal and spatial variation of magnetization generates an additional damping torque due to spin-motive force. We performed semi-one-dimensional (1-D) and two-dimensional (2-D) micromagnetic simulations to investigate effect of the additional damping on the field-driven transverse wall dynamics in a magnetic nanowire. At the magnetic field above the Walker breakdown field, the additional damping due to the spin-motive force causes an increase of domain wall velocity. In semi-1-D model, the amount of increased domain wall velocity is linearly proportional to the external magnetic field as predicted by theory. However, in 2-D model, it is inversely proportional to the field owing to the periodic injection of antivortex.

Original language	English
Article number	5467553
Pages (from-to)	2167-2170
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	46
Issue number	6
DOIs	https://doi.org/10.1109/TMAG.2010.2041909
Publication status	Published - 2010 Jun

Bibliographical note

Funding Information:
This work was supported by the IT R&D program of MKE/ KEIT.

Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.

Keywords

Domain wall motion
Gilbert damping
Micromagnetic simulation
Spin-motive force

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2010.2041909

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abstract = "Temporal and spatial variation of magnetization generates an additional damping torque due to spin-motive force. We performed semi-one-dimensional (1-D) and two-dimensional (2-D) micromagnetic simulations to investigate effect of the additional damping on the field-driven transverse wall dynamics in a magnetic nanowire. At the magnetic field above the Walker breakdown field, the additional damping due to the spin-motive force causes an increase of domain wall velocity. In semi-1-D model, the amount of increased domain wall velocity is linearly proportional to the external magnetic field as predicted by theory. However, in 2-D model, it is inversely proportional to the field owing to the periodic injection of antivortex.",

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N2 - Temporal and spatial variation of magnetization generates an additional damping torque due to spin-motive force. We performed semi-one-dimensional (1-D) and two-dimensional (2-D) micromagnetic simulations to investigate effect of the additional damping on the field-driven transverse wall dynamics in a magnetic nanowire. At the magnetic field above the Walker breakdown field, the additional damping due to the spin-motive force causes an increase of domain wall velocity. In semi-1-D model, the amount of increased domain wall velocity is linearly proportional to the external magnetic field as predicted by theory. However, in 2-D model, it is inversely proportional to the field owing to the periodic injection of antivortex.

AB - Temporal and spatial variation of magnetization generates an additional damping torque due to spin-motive force. We performed semi-one-dimensional (1-D) and two-dimensional (2-D) micromagnetic simulations to investigate effect of the additional damping on the field-driven transverse wall dynamics in a magnetic nanowire. At the magnetic field above the Walker breakdown field, the additional damping due to the spin-motive force causes an increase of domain wall velocity. In semi-1-D model, the amount of increased domain wall velocity is linearly proportional to the external magnetic field as predicted by theory. However, in 2-D model, it is inversely proportional to the field owing to the periodic injection of antivortex.

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Effect of enhanced damping due to spin-motive force on field-driven domain wall motion

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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