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首页> 外文期刊>Physical review.B.Condensed matter and materials physics >Unconventional domain-wall pairs and interacting Bloch lines in a Dzyaloshinskii-Moriya multilayer thin film
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Unconventional domain-wall pairs and interacting Bloch lines in a Dzyaloshinskii-Moriya multilayer thin film

机译：在Dzyaloshinskii-Moriya多层薄膜中的非传统领域 - 墙上对和互动布线线

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摘要

Bloch lines (BLs) play a key role in determining the static and dynamic behavior of chiral domain walls and skyrmions in multilayer films with a significant Dzyaloshinskii-Moriya interaction (DMI). Here, using in situ Lorentz phase microscopy, we reveal a type of spin texture termed a type-Ⅱ domain-wall pair (DWP). stabilized in DMI multilayer thin films with BLs. For a type-Ⅱ DWP, the Bloch components of each complementary domain wall are parallel, implying opposite chirality. We find that type-Ⅱ DWPs preferentially form through bifurcation of a type-Ⅰ DWP and require the formation of at least two BLs. We demonstrate a distinct phase jump associated with type-Ⅱ DWPs, and further we reveal the role they play in the formation of mixed-character skyrmions where the Bloch component can be of either left- or right-handed chirality.
机译：Bloch线（BLS）在确定具有重要Dzyaloshinskii-Moriya相互作用（DMI）的多层膜中手性域壁和臭氧的静态和动态行为来发挥关键作用。这里，使用原位洛伦兹相显微镜，我们揭示了一种旋转纹理，称为Ⅱ型畴壁对（DWP）。用BLS稳定在DMI多层薄膜中。对于Ⅱ型DWP，每个互补域壁的所述布兰组分是平行的，暗示相反的手性。我们发现第Ⅱ型DWP优先通过Ⅰ型DWP的分叉形成，并且需要形成至少两个BLS。我们展示了与Ⅱ型DWP相关的明显相跳，进一步揭示了他们在形成混合性障碍的形成中发挥作用，其中Bloch组分可以是左手或右手手性的。

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    《Physical review.B.Condensed matter and materials physics》 |2020年第21期|214429.1-214429.9|共9页
  • 作者

    Joseph A. Garlow; Marco Beleggia; Shawn D. Pollard; Hyunsoo Yang; Yimei Zhu;

  • 作者单位

    Condensed Matter Physics and Materials Science Division Brookhaven National Laboratory Upton New York 11973 USA Department of Materials Science and Chemical Engineering Stony Brook University Stony Brook New York 11794 USA;

    DTU Nanolab Technical University of Denmark 2800 Kgs Lyngby Denmark;

    Department of Electrical and Computer Engineering National University of Singapore Singapore 117576;

    Department of Electrical and Computer Engineering National University of Singapore Singapore 117576;

    Condensed Matter Physics and Materials Science Division Brookhaven National Laboratory Upton New York 11973 USA Department of Materials Science and Chemical Engineering Stony Brook University Stony Brook New York 11794 USA;

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