Discovery of a Bloch point quadrupole constituting hybrid topological strings Article Swipe
Fehmi Sami Yasin
,
Jan Masell
,
Yoshio Takahashi
,
Tetsuya Akashi
,
Norio Baba
,
Kosuke Karube
,
Daisuke Shindo
,
T. Arima
,
Y. Taguchi
,
Yoshinori Tokura
,
Toshiaki Tanigaki
,
Xiuzhen Yu
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2308.14219
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2308.14219
Topological magnetic (anti)skrymions are robust string-like objects heralded as potential components in next-generation topological spintronics devices due to their manipulability via low-energy stimuli such as magnetic fields, heat, and electric/thermal current. While these two-dimensional (2D) topological objects are widely studied, intrinsically three-dimensional (3D) electron-spin real-space topology remains less explored despite its prevalence in bulky magnets. Here, we capture the 3D structure of antiskyrmions in a single-crystal, precision-doped (Fe_{0.63}Ni_{0.3}Pd_{0.07})_{3}P lamellae using holographic vector field electron tomography at room temperature and zero field. Our measurements reveal hybrid string-like solitons composed of skyrmions with topological number W = -1 on the lamellae's surfaces and an antiskyrmion (W = +1) connecting them. High resolution images uncover a Bloch point (BP) quadrupole (four magnetic (anti)monopoles) positioned along the rectangular antiskyrmion's four corners (Bloch lines), which enable the observed lengthwise topological transitions. Furthermore, we calculate and compare the energy densities of hybrid strings with ideal (anti)skyrmion strings using micromagnetic simulations, which suggest that this composite (anti)BP structure stabilizes via the subtle interplay between the magnetostatic interaction and anisotropic Dzyaloshinskii-Moriya interaction. The discovery of these hybrid spin textures enables topological tunabilty, a tunable topological Hall effect, and the suppression of skyrmion Hall motion, disrupting existing paradigms within spintronics.
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Metadata
- Type
- preprint
- Language
- en
- Landing Page
- http://arxiv.org/abs/2308.14219
- https://arxiv.org/pdf/2308.14219
- OA Status
- green
- Cited By
- 2
- References
- 50
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4386272732
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4386272732Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.48550/arxiv.2308.14219Digital Object Identifier
- Title
-
Discovery of a Bloch point quadrupole constituting hybrid topological stringsWork title
- Type
-
preprintOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2023Year of publication
- Publication date
-
2023-08-27Full publication date if available
- Authors
-
Fehmi Sami Yasin, Jan Masell, Yoshio Takahashi, Tetsuya Akashi, Norio Baba, Kosuke Karube, Daisuke Shindo, T. Arima, Y. Taguchi, Yoshinori Tokura, Toshiaki Tanigaki, Xiuzhen YuList of authors in order
- Landing page
-
https://arxiv.org/abs/2308.14219Publisher landing page
- PDF URL
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https://arxiv.org/pdf/2308.14219Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
greenOpen access status per OpenAlex
- OA URL
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https://arxiv.org/pdf/2308.14219Direct OA link when available
- Concepts
-
Skyrmion, Spintronics, Physics, Topology (electrical circuits), Magnetic field, Spin (aerodynamics), Topological quantum number, Quadrupole, Condensed matter physics, Magnet, Hall effect, Ferromagnetism, Quantum mechanics, Mathematics, Thermodynamics, CombinatoricsTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
2Total citation count in OpenAlex
- Citations by year (recent)
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2023: 2Per-year citation counts (last 5 years)
- References (count)
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50Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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