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 journalArticle

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 languageEnglish
Article number5467553
Pages (from-to)2167-2170
Number of pages4
JournalIEEE Transactions on Magnetics
Volume46
Issue number6
DOIs
Publication statusPublished - 2010 Jun 1

Keywords

  • Domain wall motion
  • Gilbert damping
  • Micromagnetic simulation
  • Spin-motive force

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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