Topological Phase Transformation and Collapse Dynamics of Spin Textures in a Non‐Centrosymmetric D2d System

Author:

Jena Jagannath1,Koraltan Sabri23,Bruckner Florian2,Holst Konstantin14,Tangi Malleswararao1,Abert Claas25,Felser Claudia6,Suess Dieter25,Parkin Stuart S.P.1ORCID

Affiliation:

1. Max Planck Institute of Microstructure Physics 06120 Halle Germany

2. Physics of Functional Materials Faculty of Physics University of Vienna Vienna 1090 Austria

3. Vienna Doctoral School in Physics University of Vienna Vienna 1090 Austria

4. Institute of Physics Martin Luther University Halle‐ Wittenberg 06120 Halle (Saale) Germany

5. Research Platform MMM Mathematics‐Magnetism‐Materials University of Vienna Vienna 1090 Austria

6. Max Planck Institute for Chemical Physics of Solids 01187 Dresden Germany

Abstract

AbstractRecently a large variety of non‐collinear spin textures have been revealed in various crystals with different symmetry groups. Of particular interest are crystals with D2d symmetry that exhibit a complex variety of stable and metastable spin textures that includes antiskyrmions, elliptical Bloch‐skyrmions, fractional‐antiskyrmions, fractional Bloch‐skyrmions, and type‐II trivial‐bubbles. The observation of these structures necessitates their stabilization via magnetic field and temperature protocols which demands a thorough understanding of their creation, transformation, and collapse dynamics. Utilizing the real‐space imaging capabilities of Lorentz transmission electron microscopy, the generation and annihilation of diverse spin textures in a single D2d Heusler compound are demonstrated. It is showed that antiskyrmions and elliptical Bloch‐skyrmions can be deformed into more elaborate elongated magnetic nano‐objects through a collapse mechanism. Their elongation is governed by the intrinsic antisymmetric Dzyaloshinskii‐Moriya vector exchange interaction and dipolar energy present in the system. Furthermore, antiskyrmions are found to be metastable at all temperatures on field‐cooling, while a topological phase transformation from elliptical Bloch‐skyrmions to antiskyrmions rather takes places on field‐heating. These results are corroborated by micromagnetic simulations and demonstrate the efficient manipulation of different spin textures in a D2d compound by varying field and temperature protocols and represents a critical step toward the application of magnetic skyrmions.

Funder

Deutsche Forschungsgemeinschaft

Publisher

Wiley

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3