Antiferromagnetic skyrmion-based logic gates controlled by electric currents and fields

Xue, Lunsheng; Xia, Jingbo; Zhang, Xichao; Ezawa, Motohiko; Tretiakov, Oleg A.; Liu, Xiaoxi; Qiu, Lei; Zhao, Guoping; Zhou, Yan

doi:10.1063/5.0056259

Cited by 55 publications

(38 citation statements)

References 81 publications

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“…Similarly, antiferromagnetic nanotracks can be engineered to realize Boolean logic gates (Liang et al, 2019;Xia et al, 2017). Liang et al (2019) have proposed a cross bar type structure to implement universal logic gates (see Figure 39(b)). In this structure, the anisotropy at the junction of the cross bar is modulated by the electric field which controls the motion of skyrmion bits to the output.…”

Section: E Topological Transport In Non-trivial Solitonsmentioning

confidence: 99%

Topological Aspects of Antiferromagnets

Bonbien,

Zhuo,

Salimath

et al. 2021

Preprint

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Magnonic topological insulators 39 2. Magnonic Weyl and Dirac semimetals 40 V. Topological Antiferromagnetic Textures 41 A. Antiferromagnetic solitons in one-dimension 41 B. Antiferromagnetic skyrmions 43 C. Textures in noncollinear antiferromagnets 44 D. Current-driven torques and skyrmion motion 45 E. Topological transport in non-trivial solitons 46 VI. Topological Excitations in Quantum Antiferromagnets 47 A. Frustrations, fractional excitations and topology 49 B. Topological spinons in kagomé antiferromagnets 50 C. Majorana fermions in Kitaev honeycomb lattices 51 D. Spinons in triangular antiferromagnets 53 E. Monopoles and Dirac strings in magnetic pyrochlores 53 F. A new playground for spintronics 55 VII. Perspectives 56 Acknowledgements 57 References 57

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Section: E Topological Transport In Non-trivial Solitonsmentioning

confidence: 99%

Topological Aspects of Antiferromagnets

Bonbien,

Zhuo,

Salimath

et al. 2021

Preprint

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“…Especially interesting are the skyrmions appearing in ferromagnetic–heavy metal multilayered films where they can be intentionally created and manipulated . Such films with skyrmions can be used in racetrack memory technologies. − However, the problem of skyrmion motion (needed for the racetrack memory) is still far from being resolved. There are various methods of skyrmion movement currently being investigated.…”

Section: Introductionmentioning

confidence: 99%

DMI-Gradient-Driven Skyrmion Motion

Gorshkov

Gorev

Сапожников

et al. 2022

ACS Appl. Electron. Mater.

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We study skyrmion control in an artificial ultrathin magnetic film with perpendicular anisotropy. We simulate numerically the skyrmion motion induced by spatial gradient of the Dzyaloshinskii–Moriya interaction (DMI) strength. We show that creating the DMI gradient is an efficient way to move skyrmions. In particular, experimentally achievable DMI gradients can be as effective as spin-polarized electric currents with 1011 A/m2 density. At that, the DMI gradient induces a much weaker skyrmion Hall effect. The DMI gradient can be created with a mechanical strain in a ferroelectric–ferromagnetic hybrid system. This opens an alternative way to manipulate skyrmions.

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“…Among these topological solitons, the 2D magnetic skyrmions in magnetic materials with Dzyaloshinskii-Moriya interactions (DMIs) have aroused much interest [20,21] due to their prominent properties, such as their nanoscale size and low driving current density [22]. Besides, magnetic skyrmions can be used as information carrier in future spintronic applications [23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Mutual conversion between a magnetic Neel hopfion and a Neel toron

Li,

Xia,

Shen

et al. 2022

Preprint

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Three-dimensional (3D) magnetic textures attract great attention from researchers due to their fascinating structures and dynamic behaviors. Magnetic hopfion is a prominent example of 3D magnetic textures. Here, we numerically study the mutual conversion between a Néel-type hopfion and a Néel-type toron under an external magnetic field. We also investigate the excitation modes of hopfions and torons in a film with strong perpendicular magnetic anisotropy. It is found that the Néel-type hopfion could be a stable state in the absence of the external magnetic field, and its diameter varies with the out-of-plane magnetic field. The Néel-type hopfion may transform to a Néel-type toron at an out-of-plane magnetic field of about 20 mT, where the cross section structure is a Néel-type skyrmion. The hopfion and toron show different excitation modes in the presence of an in-plane microwave magnetic field. Our results provide a method to realize the conversion between a Néel-type hopfion and a Néel-type toron, which also gives a way to distinguish Bloch-type and Néel-type hopfions.

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Antiferromagnetic skyrmion-based logic gates controlled by electric currents and fields

Cited by 55 publications

References 81 publications

Topological Aspects of Antiferromagnets

Topological Aspects of Antiferromagnets

DMI-Gradient-Driven Skyrmion Motion

Mutual conversion between a magnetic Neel hopfion and a Neel toron

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