Theory of the Dzyaloshinskii domain-wall tilt in ferromagnetic nanostrips

Cyrill B. Muratov, Valeriy V. Slastikov, Alexander G. Kolesnikov, Oleg A. Tretiakov

Research output: Contribution to journalArticle (Academic Journal)

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Abstract

We present an analytical theory of domain-wall tilt due to a transverse in-plane magnetic field in a ferromagnetic nanostrip with out-of-plane anisotropy and Dzyaloshinskii-Moriya interaction (DMI). The theory treats the domain walls as one-dimensional objects with orientation-dependent energy, which interact with the sample edges. We show that under an applied field the domain wall remains straight, but tilts at an angle to the direction of the magnetic field that is proportional to the field strength for moderate fields and sufficiently strong DMI. Furthermore, we obtain a nonlinear dependence of the tilt angle on the applied field at weaker DMI. Our analytical results are corroborated by micromagnetic simulations.

Original languageEnglish
Article number134417
JournalPhysical Review B
Volume96
Issue number13
Early online date16 Oct 2017
DOIs
Publication statusPublished - 16 Oct 2017

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