Edge states in a two-dimensional honeycomb lattice of massive magnetic skyrmions

Li, Z.-X.; Wang, C.; Cao, Yunshan; Peng, Yan

doi:10.1103/physrevb.98.180407

Cited by 36 publications

(30 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Then we draw the spatial distribution of oscillation amplitude, it can be seen clearly that the propagation of vortex oscillations is bidirectional. This nonchiral mode can be simply explained in terms of the Tamm-Shockley mechanism [48,64,65].…”

Section: Supplementary Notementioning

confidence: 99%

“…When embracing the topological properties of vortex states, it paves the way for robust spintronic information processing. Topological chiral edge states are discovered in a two-dimensional honeycomb lattice of magnetic solitons [48,49]. However, all these topological magnonic and solitonic states are first-order in nature, according to the classification of topological insulators mentioned above.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Higher-order topological solitonic insulators

Cao

Peng

et al. 2019

npj Comput Mater

Self Cite

View full text Add to dashboard Cite

Pursuing topological phase and matter in a variety of systems is one central issue in current physical sciences and engineering. Motivated by the recent experimental observation of corner states in acoustic and photonic structures, we theoretically study the dipolar-coupled gyration motion of magnetic solitons on the twodimensional breathing kagome lattice. We calculate the phase diagram and predict both the Tamm-Shockley edge modes and the second-order corner states when the ratio between alternate lattice constants is greater than a critical value. We show that the emerging corner states are topologically robust against both structure defects and moderate disorders. Micromagnetic simulations are implemented to verify the theoretical predictions with an excellent agreement. Our results pave the way for investigating higher-order topological insulators based on magnetic solitons. arXiv:1909.11511v1 [cond-mat.mes-hall]

show abstract

Section: Supplementary Notementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Higher-order topological solitonic insulators

Cao

Peng

et al. 2019

npj Comput Mater

Self Cite

View full text Add to dashboard Cite

show abstract

“…The skyrmion shows two gyration modes under the in-plane microwave. The small peak between 80-100 GHz may be explained by the non-Newtonian gyration mechanism proposed by Z-X Li [25].…”

Section: Resultsmentioning

confidence: 84%

Spin current pumped by confined breathing skyrmion

Zhang¹,

Jin²,

Xia³

et al. 2020

New J. Phys.

View full text Add to dashboard Cite

Spin pumping is a widely recognized method to generate the spin current in the spintronics, which can be found in varieties of magnetic materials and is acknowledged as a fundamentally dynamic process equivalent to the spin-transfer torque. In this work, we theoretically verified the oscillating spin current mixed by AC and DC components can be pumped from the microwave-motivated breathing skyrmion. The spin current can be pumped within a relatively low-frequency microwave compared with the in-plane ferromagnetic resonance (FMR). Although the amplitude of spin current density for a single confined skyrmion is several times lower than the FMR spin pumping, the pumped current would be improved to be the same order as the FMR through a tight skyrmion lattice. Based on the spin pumping of breathing skyrmion, we designed a high reading-speed racetrack memory model whose reading speed is much higher than the SOT (spin-orbit torque)/STT (spin-transfer torque) skyrmion racetrack. Our work focuses on the spin pumping phenomenon inside the breathing skyrmion, and it may contribute to the applications of the skyrmion-based device.

show abstract

“…Moreover, skyrmion lattice with unconventional arrangements can also be patterned, e.g., the square skyrmion lattice shown in Fig. 5b, making such material system a versatile platform for studying numerous topological phenomena, such as the topological Hall effect 2 , topological magnons and their edge states 32,33 , etc.…”

Section: Discussionmentioning

confidence: 99%

Creating zero-field skyrmions in exchange-biased multilayers through X-ray illumination

et al. 2020

View full text Add to dashboard Cite

Skyrmions, magnetic textures with topological stability, hold promises for high-density and energy-efficient information storage devices owing to their small size and low driving-current density. Precise creation of a single nanoscale skyrmion is a prerequisite to further understand the skyrmion physics and tailor skyrmion-based applications. Here, we demonstrate the creation of individual skyrmions at zero-field in an exchange-biased magnetic multilayer with exposure to soft X-rays. In particular, a single skyrmion with 100-nm size can be created at the desired position using a focused X-ray spot of sub-50-nm size. This single skyrmion creation is driven by the X-ray-induced modification of the antiferromagnetic order and the corresponding exchange bias. Furthermore, artificial skyrmion lattices with various arrangements can be patterned using X-ray. These results demonstrate the potential of accurate optical control of single skyrmion at sub-100 nm scale. We envision that X-ray could serve as a versatile tool for local manipulation of magnetic orders.

show abstract

Edge states in a two-dimensional honeycomb lattice of massive magnetic skyrmions

Cited by 36 publications

References 58 publications

Higher-order topological solitonic insulators

Higher-order topological solitonic insulators

Spin current pumped by confined breathing skyrmion

Creating zero-field skyrmions in exchange-biased multilayers through X-ray illumination

Contact Info

Product

Resources

About