Current driven mnagnetization dynamics in ferromagnetic nanowires with a dzyaloshinskii-moriya interaction

O. A. Tretiakov, Ar Abanov

Research output: Contribution to journalArticlepeer-review

83 Citations (Scopus)

Abstract

We study current-induced magnetization dynamics in a long thin ferromagnetic wire with a Dzyaloshinskii-Moriya interaction (DMI). We find a spiral domain wall configuration of the magnetization and obtain an analytical expression for the width of the domain wall as a function of the interaction strengths. Our findings show that above a certain value of DMI a domain wall configuration cannot exist in the wire. Below this value we determine the domain wall dynamics for small currents, and calculate the drift velocity of the domain wall along the wire. We show that the DMI suppresses the minimum value of current required to move the domain wall. Depending on its sign, the DMI increases or decreases the domain wall drift velocity.

Original languageEnglish
Article number157201
JournalPhysical review letters
Volume105
Issue number15
DOIs
Publication statusPublished - 2010 Oct 4

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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