Skyrmions are intriguing quasiparticles in the field of condensed matter due to their unique physics and promising applications in spintronic devices. However, despite abundant studies on skyrmions with a topological charge of Q = 1, there have been only few on those with higher Q ( ) due to their intrinsic instability in Dzyaloshinskii–Moriya interaction (DMI) systems. In this work, applying the frustrated Heisenberg spin model, we investigate the stability of high-Q skyrmions and the manipulation of their diameters in a hexagonal close-packed lattice through atomistic simulations and first-principles calculations. First, three spin textures, called spiral, skyrmion, and ferromagnetic, are identified by varying ( , ), and it is shown that skyrmions with higher Q can occupy a wider range of ( , ) values. The diameter of the skyrmions can then be finely tuned using the frustration strength ( ), the single-ion anisotropy (K), and an external magnetic field (B). As B increases, the high-Q skyrmions split into skyrmions with smaller Q and can be annihilated by a larger B. Furthermore, we find that the CoCl2 monolayer satisfies the criteria for a frustrated magnet, and its magnetic behaviors align with the aforementioned conclusions. In addition, high-Q skyrmions are identified in the CoCl2 monolayer, and the corresponding energy barriers for skyrmion collapse are investigated. Our findings pave the way for prospective spintronic applications based on high-Q and nanoscale skyrmionic textures.
Skip Nav Destination
Article navigation
26 August 2024
Research Article|
August 26 2024
High-topological-number skyrmions with tunable diameters in two-dimensional frustrated magnets
Special Collection:
Topological and Chiral Matter – Physics and Applications
Hongliang Hu
;
Hongliang Hu
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University
, Hangzhou 310018, China
Search for other works by this author on:
Zhong Shen
;
Zhong Shen
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University
, Hangzhou 310018, China
Search for other works by this author on:
Zheng Chen
;
Zheng Chen
(Investigation, Methodology, Visualization, Writing – review & editing)
1
Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University
, Hangzhou 310018, China
Search for other works by this author on:
Xiaoping Wu;
Xiaoping Wu
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Writing – original draft, Writing – review & editing)
1
Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University
, Hangzhou 310018, China
Search for other works by this author on:
Tingting Zhong
;
Tingting Zhong
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Writing – original draft, Writing – review & editing)
1
Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University
, Hangzhou 310018, China
Search for other works by this author on:
Changsheng Song
Changsheng Song
a)
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Writing – original draft, Writing – review & editing)
1
Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University
, Hangzhou 310018, China
2
Longgang Institute of Zhejiang Sci-Tech University
, Wenzhou 325802, China
a)Author to whom correspondence should be addressed: [email protected]
Search for other works by this author on:
a)Author to whom correspondence should be addressed: [email protected]
Appl. Phys. Lett. 125, 092402 (2024)
Article history
Received:
May 06 2024
Accepted:
August 07 2024
Citation
Hongliang Hu, Zhong Shen, Zheng Chen, Xiaoping Wu, Tingting Zhong, Changsheng Song; High-topological-number skyrmions with tunable diameters in two-dimensional frustrated magnets. Appl. Phys. Lett. 26 August 2024; 125 (9): 092402. https://doi.org/10.1063/5.0217683
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
Roadmap on photonic metasurfaces
Sebastian A. Schulz, Rupert. F. Oulton, et al.
Sputter epitaxy of ScAlN films on GaN high electron mobility transistor structures
Tomoya Okuda, Shunsuke Ota, et al.
Era of entropy: Synthesis, structure, properties, and applications of high-entropy materials
Christina M. Rost, Alessandro R. Mazza, et al.
Related Content
In-plane strain-induced structural phase transition and interlayer antiferromagnetic skyrmions in 2H-VSe2 bilayer
Appl. Phys. Lett. (February 2024)
Room-temperature topological spin textures and magnetic-field-induced skyrmion-bimeron switching in FeSnN3 monolayer
Appl. Phys. Lett. (January 2025)
Ferroelectric polarizations engineered reversible skyrmion–bimeron switch in van der Waals heterostructure RuClBr/Ga2S3
Appl. Phys. Lett. (January 2025)
Current-driven skyrmionium in a frustrated magnetic system
Appl. Phys. Lett. (July 2020)
Rotational motion of skyrmion driven by optical vortex in frustrated magnets
Appl. Phys. Lett. (August 2024)