Geometrical protection of topological magnetic solitons in microprocessed chiral magnets

Masaki Mito, Hiroyuki Ohsumi, Kazuki Tsuruta, Yoshinori Kotani, Tetsuya Nakamura, Yoshihiko Togawa, Misako Shinozaki, Yusuke Kato, Jun Ichiro Kishine, Jun Ichiro Ohe, Yusuke Kousaka, Jun Akimitsu, Katsuya Inoue

    Research output: Contribution to journalArticlepeer-review

    18 Citations (Scopus)

    Abstract

    A chiral soliton lattice stabilized in a monoaxial chiral magnet CrNb3S6 is a magnetic superlattice consisting of magnetic kinks with a ferromagnetic background. The magnetic kinks are considered to be topological magnetic solitons (TMSs). Changes in the TMS number yield discretized responses in magnetization and electrical conductivity, and this effect is more prominent in smaller crystals. We demonstrate that, in microprocessed CrNb3S6 crystals, TMSs are geometrically protected through element-selected micromagnetometry using soft x-ray magnetic circular dichroism (MCD). A series of x-ray MCD data is supported by mean-field and micromagnetic analyses. By designing the microcrystal geometry, TMS numbers can be successfully changed and fixed over a wide range of magnetic fields.

    Original languageEnglish
    Article number024408
    JournalPhysical Review B
    Volume97
    Issue number2
    DOIs
    Publication statusPublished - Jan 9 2018

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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