3D analytical model of skyrmion-like structures in an antiferromagnet with DMI

Gorobets, Oksana; Gorobets, Yu. I.

doi:10.1016/j.jmmm.2020.166800

Cited by 8 publications

(3 citation statements)

References 64 publications

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“…This is a reflection of the fact that there is no uniqueness theorem for solutions of the Landau-Lifshitz equation. For example, specific examples of the existence of an infinite set of exact analytic solutions of the Landau-Lifshitz equation in a specific sample were presented under the same boundary conditions in paper [31]. The temporary oscillations of the skyrmion-like building block type from the Néel to Bloch one during the domain wall motion are predicted according to formula (7).…”

Section: Discussionmentioning

confidence: 99%

Spin-Polarized Current-Driven Ferromagnetic Domain Wall Motion with a Skyrmion-Like Building Block

Gorobets

Tiukavkina

et al. 2020

Ukr. J. Phys.

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Section: Discussionmentioning

confidence: 99%

Spin-Polarized Current-Driven Ferromagnetic Domain Wall Motion with a Skyrmion-Like Building Block

Gorobets

Tiukavkina

et al. 2020

Ukr. J. Phys.

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“…This property of the sigma-model equation was used in this or that form by many authors while analyzing various solitons in AFMs (see the recent works [94][95][96][97] and references therein). It allows the construction of dynamic solutions by simply applying formulas (6) and (7) to available static solutions.…”

Section: Inhomogeneous Nonlinear Dynamic States Of Afmsmentioning

confidence: 99%

Spin Dynamics in Antiferromagnets with Domain Walls and Disclinations

et al. 2020

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The spin dynamics in antiferromagnets with atomic dislocations and dislocation-induced spin disclinations has been discussed. It is shown how the usual sigma-model equation can be used to describe it. The dynamical states with the spatially inhomogeneous spin precession are studied. It is demonstrated that such an internal dynamics of the spin disclinations and the related domain walls can serve as a basis for creating a spin-Hall nanogenerator pumped with a spin current and characterized by a low excitation threshold.

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“…In recent years the interest shifted from the ferromagnets (FM), where the skyrmions were initially found [6], to new potentially skyrmion-hosting materials. For instance, high expectations are put on antiferromagnetic (AFM) materials [7,8], implementation of which in skyrmion-based devices is reported to have certain advantages over the FM ones [9,10]. Among other mechanisms, which can lead to the stabilization of a skyrmion phase in bulk samples and thin films [11][12][13], is the inversion-symmetrybreaking Dzyaloshinskii-Moriya interaction, responsible for the creation of both Néeland Bloch-type skyrmions of the size of 5-100 nm with fixed helicity.…”

Section: Introductionmentioning

confidence: 99%

Stability of skyrmion crystal phase in antiferromagnetic triangular lattice with DMI and single-ion anisotropy

Mohylna,

Žukovič

2021

Preprint

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We study a frustrated antiferromagnetic Heisenberg model on a triangular lattice with the Dzyaloshinskii-Moriya interaction (DMI) in the presence of an external magnetic field and a single-ion anisotropy. Phase diagrams in the temperature-field plane for both easy-axis and easy-plane anisotropy of a varying strength are constructed in the regimes of a moderate and strong DMI by parallel tempering Monte Carlo simulations. For the considered range of parameters the phase diagrams featuring up to four ordered phases are identified. A skyrmion lattice (SkX) phase is found to be stabilized within some temperature and field window for sufficiently large DMI and not too strong anisotropy. For the systems with moderate (larger) DMI, a small easy-plane (easy-axis) anisotropy is concluded to be beneficial by extending (shifting) the field window of the SkX appearance to lower values. The Metropolis dynamics is employed to probe the persistence of SkX upon quenching the field to zero or small finite values. The most favorable conditions for the skyrmions persistence are confirmed at low temperatures, small DMI and small easy-plane anisotropy values.

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3D analytical model of skyrmion-like structures in an antiferromagnet with DMI

Cited by 8 publications

References 64 publications

Spin-Polarized Current-Driven Ferromagnetic Domain Wall Motion with a Skyrmion-Like Building Block

Spin-Polarized Current-Driven Ferromagnetic Domain Wall Motion with a Skyrmion-Like Building Block

Spin Dynamics in Antiferromagnets with Domain Walls and Disclinations

Stability of skyrmion crystal phase in antiferromagnetic triangular lattice with DMI and single-ion anisotropy

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