Mesoscale Phase Separation of Skyrmion-Vortex Matter in Chiral-Magnet–Superconductor Heterostructures

Neto, José F. S.; Silva, Clécio C. de Souza

doi:10.1103/physrevlett.128.057001

Cited by 12 publications

(4 citation statements)

References 54 publications

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“…Moreover, the interplay between the two-body and three-body terms can be viewed as a competition between interactions, and thus may lead to a variety of complex phenomena in unconfined systems. These could include density-modulated spatial patterns similar to those observed in other systems with competing interactions, such as colloidal particles with competing short-range attractive and long-range repulsive interactions [41], block copolymers [42] and skyrmion-vortex mixtures in magnetsuperconductor bilayers [43].…”

Section: Discussionmentioning

confidence: 86%

Structural phases of classical 2D clusters with competing two-body and three-body interactions

Correia

Freitas

Cabral

et al. 2023

J. Phys.: Condens. Matter

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In modeling systems of interacting particles, many-body terms beyond pairwise interactions are often overlooked. Nevertheless, in certain scenarios, even small contributions from three-body or higher-order terms can disrupt significant changes in their collective behavior. Here we investigate the effects of three-body interactions on the structure and stability of 2D, harmonically confined clusters. We consider clusters with three distinct pairwise interactions: log r, 1/r, and exp(-κr}/r, thus covering a wide range of condensed and soft matter systems, such as vortices in mesoscopic superconductors, charged colloids, and dusty plasma. In each case, we evaluate the energetics and normal mode spectra of equilibrium and metastable configurations as the intensity of an attractive, Gaussian three-body potential is varied. We demonstrate that, above a threshold value of the three-body energy strength, the cluster shrinks and eventually becomes self-sustained, that is, it remains cohesive after the confinement potential is shut down. Depending on the strengths of the two-body and three-body interaction terms, this compaction can be continuous or abrupt. The latter case is characterized by a discontinuous jump in the particle density and coexsitence of the compact and non-compact phases as metastable states, as in a first-order phase transition. For some values of the particle number, the compaction is preceded by one or more structural changes, resulting in configurations not usually seen in purely pairwise-additive clusters.

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Section: Discussionmentioning

confidence: 86%

Structural phases of classical 2D clusters with competing two-body and three-body interactions

Correia

Freitas

Cabral

et al. 2023

J. Phys.: Condens. Matter

Self Cite

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“…[52,121,122] In addition, an inverse spin-galvanic effect and an increase in T C can be achieved based on FM/TI (TI stands for "topological insulator") heterostructures, [123][124][125][126][127][128] and Skyrmion-vortex pair, magnon-fluxon interaction can be demonstrated in FM/superconductor heterostructures. [129][130][131][132][133] More importantly, theoretical calculations also suggested that quantum anomalous Hall effect can be observed in ferro-magnetic NiI 2 /graphene heterojunction, [134] and that proximity magnetization reversal and emergence of an antiferromagnetic Dirac dispersion exist in twisted Cr 2 Ge 2 Te 6 /graphene heterojunctions. [135] Typically, the above-mentioned heterojunction can be fabricated via both "top-down" (for example, drytransfer or pick-up technique) and "bottom up" (for instance, growth with molecular beam epitaxy or chemical vapor deposition techniques) approaches.…”

Section: The Proximity Coupling Effect Controlling Of Magnetismmentioning

confidence: 99%

Controlling Exchange Interactions and Emergent Magnetic Phenomena in Layered 3d‐Orbital Ferromagnets

Qiu

Qin

et al. 2023

Advanced Physics Research

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Layered 3d‐orbital ferromagnet is an ideal research platform to experimentally achieve intrinsic 2D ferromagnetism and theoretically study the quantum nature of magnetic exchange interactions therein. A variety of magnetic phases can emerge from the strongly correlated feature of 3d‐orbital electrons, in which their exchange interactions can be effectively modulated by various kinds of external stimuli. Therefore, controlling the emergent magnetic phenomena of layered 3d‐orbital ferromagnets is significant in both fundamental science and practical applications. Considering the roles of magnetic exchange interactions, this review summarizes recent progress in controlling the emergent magnetic properties of layered 3d‐orbital ferromagnets by systematically introducing modulation methods, underlying mechanisms, and device applications. The existing challenges and future prospects for this research field are also outlined, shedding light on finding optimized magnetic materials, exploring powerful modulation techniques, and designing multifunctional new concept devices.

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“…nanodots etc. [35][36][37], skyrmion-vortex lattices [38], as well as to more exotic magnetic excitations, e.g. antiskyrmions, bimerons, biskyrmions, skyrmioniums, etc.…”

Section: Doi: 101134/s0021364022602512mentioning

confidence: 99%

Repulsion of a Néel-Type Skyrmion from a Pearl Vortex in Thin Ferromagnet–Superconductor Heterostructures

Andriaykhina

Burmistrov

2022

Jetp Lett.

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In this paper we study repulsion of a Néel-type skyrmion in a chiral ferromagnetic film from a superconducting Pearl vortex due to the stray fields. Taking into account an effect of the vortex magnetic field on the skyrmion non-perturbatively, we find that the repulsion between them is suppressed with increase of the dimensionless strength of the vortex magnetic field. This manifests itself in complicated evolution of the free energy with increase of the vortex magnetic field and reduction of the equilibrium distance between the centers of Néel-type skyrmion and Pearl vortex.

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Mesoscale Phase Separation of Skyrmion-Vortex Matter in Chiral-Magnet–Superconductor Heterostructures

Cited by 12 publications

References 54 publications

Structural phases of classical 2D clusters with competing two-body and three-body interactions

Structural phases of classical 2D clusters with competing two-body and three-body interactions

Controlling Exchange Interactions and Emergent Magnetic Phenomena in Layered 3d‐Orbital Ferromagnets

Repulsion of a Néel-Type Skyrmion from a Pearl Vortex in Thin Ferromagnet–Superconductor Heterostructures

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