Plasmonic Skyrmion Lattice Based on the Magnetoelectric Effect

Wang, X.-G.; Chotorlishvili, L.; Arnold, N.; Dugaev, V. K.; Maznichenko, I. V.; Barnaś, J.; Buczek, Paweł; Parkin, Stuart S. P.; Ernst, A.

doi:10.1103/physrevlett.125.227201

Cited by 18 publications

(7 citation statements)

References 51 publications

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“…According to Ref. [45][46][47][48], the coupling strength between skyrmions increases with decreasing distance d s . In the analysis, the coupling strength c u is defined from the linear ansatz.…”

Section: B Different Bias Field and Distancementioning

confidence: 92%

“…We note that opposite to the conventional spin-echo, the trajectories of the skyrmions are helixes and therefore for individual skyrmions q xy = [(q i x ) 2 +(q i y ) 2 ] 1/2 are not circles of constant radius [45]. This difference should be taken into account in order to understand behavior of the skyrmion echo amplitude with the coupling strength and pulse duration.…”

Section: B Different Bias Field and Distancementioning

confidence: 93%

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Skyrmion Echo in a System of Interacting Skyrmions

et al. 2022

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We consider helical rotation of skyrmions confined in the potentials formed by nano-disks. Based on numerical and analytical calculations we propose the skyrmion echo phenomenon. The physical mechanism of the skyrmion echo formation is also proposed. Due to the distortion of the lattice, impurities, or pinning effect, confined skyrmions experience slightly different local fields, which leads to dephasing of the initial signal. The interaction between skyrmions also can contribute to the dephasing process. However, switching the magnetization direction in the nanodiscs (e.g. by spin transfer torque) also switches the helical rotation of the skyrmions from clockwise to anticlockwise (or vice-versa), and this restores the initial signal (which is the essence of skyrmion echo).

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Section: B Different Bias Field and Distancementioning

confidence: 92%

Section: B Different Bias Field and Distancementioning

confidence: 93%

Skyrmion Echo in a System of Interacting Skyrmions

et al. 2022

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“…The recently discovered photonic skyrmions, which have chiral spin textures and can be considered as the optical manifestation of magnetic skyrmions, have attracted widespread interest in the fields of spin optics, chiral quantum optics, and photoelectric interaction. [23][24][25][26][27][28][29][30] Optical spin-orbit interactions play a significant role in the formation of photonic chiral spin textures. [31,32] Light has two fundamental dynamical properties: momentum and angular momentum (AM).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Symmetry‐Protected Photonic Chiral Spin Textures by Spin–Orbit Coupling

Shi

et al. 2021

Laser & Photonics Reviews

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Chiral spin textures are widely researched in condensed matter systems and have shown potential for use in spintronics and storage applications. Photonic counterparts of these textures are observed in various optical systems with broken inversion symmetry. Unfortunately, the resemblances are only phenomenological. This work proposes a theoretical framework based on the variational theorem to show that the photonic chiral spin textures in an optical interface originate from the system's symmetry and relativity. Analysis of the rotational symmetry in optical systems indicates that the conservation of the total angular momentum is preserved from the local variations of spin vectors. Specifically, although the integral spin momentum does not carry net energy, the local spin momentum distribution, which determines the local subluminal energy transport and minimization variation of the square of the total angular momentum, results in the chiral twisting of the local spin vectors. The findings of this study deepen the understanding of the symmetries, conservative laws, and energy transport in optical systems, reveal the similarities in the formation mechanisms and the geometries of photonic and condensed-matter chiral spin textures, and have potential applications in chiral and spin photonics.

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“…Until recently, the photonic counterpart of magnetic skyrmions has been discovered in surface plasmon polaritons (SPPs) [16,17]. To date, only Néel-type photonic skyrmion has been predicted and observed [16][17][18][19][20][21].…”

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confidence: 99%

Bloch-type photonic skyrmions in optical chiral multilayers

Zhang,

Xie,

et al. 2020

Preprint

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Plasmonic Skyrmion Lattice Based on the Magnetoelectric Effect

Cited by 18 publications

References 51 publications

Skyrmion Echo in a System of Interacting Skyrmions

Skyrmion Echo in a System of Interacting Skyrmions

Symmetry‐Protected Photonic Chiral Spin Textures by Spin–Orbit Coupling

Bloch-type photonic skyrmions in optical chiral multilayers

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