Magnetic bimerons as skyrmion analogues in in-plane magnets

Börge Göbel, Alexander Mook, Jürgen Henk, Ingrid Mertig, Oleg A. Tretiakov

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

A magnetic bimeron is a pair of two merons and can be understood as the in-plane magnetized version of a skyrmion. Here we theoretically predict the existence of single magnetic bimerons as well as bimeron crystals, and compare the emergent electrodynamics of bimerons with their skyrmion analogues. We show that bimeron crystals can be stabilized in frustrated magnets and analyze what crystal structure can stabilize bimerons or bimeron crystals via the Dzyaloshinskii-Moriya interaction. We point out that bimeron crystals, in contrast to skyrmion crystals, allow for the detection of a pure topological Hall effect. By means of micromagnetic simulations, we show that bimerons can be used as bits of information in in-plane magnetized racetrack devices, where they allow for current-driven motion for torque orientations that leave skyrmions in out-of-plane magnets stationary.

Original languageEnglish
Article number060407
JournalPhysical Review B
Volume99
Issue number6
DOIs
Publication statusPublished - 2019 Feb 25

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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