Orbital magnetoelectric effect in zigzag nanoribbons of 
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-band systems

Cysne, Tarik P.; Guimarães, Filipe S. M.; Canonico, Luis M.; Rappoport, Tatiana G.; Muniz, R. B.

doi:10.1103/physrevb.104.165403

Cited by 29 publications

(16 citation statements)

References 86 publications

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“…where m 0 (q) is given by Eq. (25). Contrary to the monolayer case, the bilayer of 2H-TMD possesses an inversion symmetry point I in interlayer space [See Fig.…”

Section: Application To Unbiased Bilayer Of 2h-tmdmentioning

confidence: 99%

“…The interest in physical phephomena related to OAM, particularly the OHE, has gained substantial push in the community of two-dimensional (2D) materials [18][19][20][21][22][23][24][25][26][27][28][29]. * tarik.cysne@gmail.com Theoretical calculations predict the existence of the orbital textures that give origin to the OHE in many 2D multiorbital materials [30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Orbital Hall effect in bilayer transition metal dichalcogenides: From the intra-atomic approximation to the Bloch states orbital magnetic moment approach

Cysne,

Bhowal,

Vignale

et al. 2022

Preprint

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“…where m 0 (q) is given by Eq. (25). Contrary to the monolayer case, the bilayer of 2H-TMD possesses an inversion symmetry point I in interlayer space [See Fig.…”

Section: Application To Unbiased Bilayer Of 2h-tmdmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Orbital Hall effect in bilayer transition metal dichalcogenides: From the intra-atomic approximation to the Bloch states orbital magnetic moment approach

Cysne,

Bhowal,

Vignale

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

“…In this situation, the effect of the DM interaction appears to be canceled out due to the presence of global inversion symmetry, but it still remains in a sublattice-dependent form. For example, the zigzag [91][92][93][94][95], honeycomb [96][97][98][99], and diamond [100][101][102] structures are typical prototypes with the sublattice-dependent DM interaction. Another example is a bilayer structure system where the sign of the DM interaction is opposite for the different two layers [103][104][105][106].…”

Section: Introductionmentioning

confidence: 99%

Skyrmion crystal and spiral phases in centrosymmetric bilayer magnets with staggered Dzyaloshinskii-Moriya interaction

Hayami

2021

Preprint

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We theoretically study a stabilization mechanism of the skyrmion crystal in centrosymmetric magnets with a bilayer structure. We show that the interplay between a layer-dependent staggered Dzyaloshinskii-Moriya interaction that arises from the absence of local inversion symmetry and the interlayer exchange interaction gives rise to a plethora of multiple-Q states including the skyrmion crystal with a quantized topological number. By performing the simulated annealing for the bilayer triangular-lattice model under an external magnetic field, we demonstrate that the skyrmion forms the triangular-shaped crystals with different helicities in each layer owing to the staggered Dzyaloshinskii-Moriya interaction. Although the relative positions of the skyrmion core in each layer are different depending on the sign of the interlayer exchange interactions, the skyrmion crystal phases robustly appear under both ferromagnetic and antiferromagnetic interlayer interactions. We also find another two triple-Q states with a uniform scalar chirality but without a quantized topological number in the low-and high-field regions. Especially, the low-field triple-Q state exhibits the opposite sign of the scalar chirality to the skyrmion crystal, which are not found in the single-layer system. Our results indicate that the lack of local inversion symmetry in the lattice structure is another key ingredient to induce topological spin textures in centrosymmetric magnets.

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“…Although we focus on the layer degree of freedom, a similar situation is expected in the systems where the inversion symmetry is preserved globally but broken intrinsically at local sites so that the sublattice-dependent DM interaction is present. Such a situation have been found in various lattice systems with the sublattice degree of freedom, such as the zigzag [163][164][165][166][167][168][169], honeycomb [170][171][172][173], and diamond [174][175][176] structures. Indeed, the fractional antiferromagnetic SkX has recently been observed in MnSc 2 S 4 with the diamond structure [8,120].…”

Section: Discussionmentioning

confidence: 98%

Multifarious skyrmion phases on a trilayer triangular lattice

Hayami

2022

Preprint

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The instability toward a magnetic skyrmion crystal in centrosymmetric trilayer magnets is investigated based on a spin model with layer-dependent Dzayloshinskii-Moriya interaction. We find various types of skyrmion crystal phases with different skyrmion numbers in a low-temperature phase diagram by performing the simulated annealing. In addition to the Néel skyrmion crystal phase that is expected to emerge in the presence of the polar-type Dzayloshinskii-Moriya interaction, we obtain the skyrmion crystal phases characteristics of the layered system: the twisted surface skyrmion crystal, anti-skyrmion crystal, and high-topological-number skyrmion crystal phases. The rich magnetic phases are brought about by the synergy among the layer-dependent Dzayloshinskii-Moriya interaction, interlayer exchange interaction, and an external magnetic field. Our results indicate that the layer degree of freedom at the surface and heterostructures provides a good platform to engineer and design the topological spin textures.

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Orbital magnetoelectric effect in zigzag nanoribbons of p -band systems

Cited by 29 publications

References 86 publications

Orbital Hall effect in bilayer transition metal dichalcogenides: From the intra-atomic approximation to the Bloch states orbital magnetic moment approach

Orbital Hall effect in bilayer transition metal dichalcogenides: From the intra-atomic approximation to the Bloch states orbital magnetic moment approach

Skyrmion crystal and spiral phases in centrosymmetric bilayer magnets with staggered Dzyaloshinskii-Moriya interaction

Multifarious skyrmion phases on a trilayer triangular lattice

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