Magnetic skyrmion binning

Kind, Charles; Foster, David

doi:10.1103/physrevb.103.l100413

Cited by 22 publications

(25 citation statements)

References 25 publications

(35 reference statements)

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“…However, there are only a few papers considering the dynamics of such skyrmions 9,10 , and a systematic study of their dynamical properties is missing. Here, we study the uniform motion of skyrmions induced by the Zhang-Li spin-transfer torque 11 .…”

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confidence: 99%

Geometry and symmetry in skyrmion dynamics

et al. 2021

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The uniform motion of chiral magnetic skyrmions induced by a spin-transfer torque displays an intricate dependence on the skyrmions' topological charge and shape. We reveal surprising patterns in this dependence through simulations of the Landau-Lifshitz-Gilbert equation with Zhang-Li torque and explain them through a geometric analysis of Thiele's equation. In particular, we show that the velocity distribution of topologically non-trivial skyrmions depends on their symmetry: it is a single circle for skyrmions of high symmetry and a family of circles for low-symmetry configurations. We also show that the velocity of the topologically trivial skyrmions, previously believed to be the fastest objects, can be surpassed, for instance, by antiskyrmions. The generality of our approach suggests the validity of our results for exchange frustrated magnets, bubble materials, and others.

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confidence: 99%

Geometry and symmetry in skyrmion dynamics

et al. 2021

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“…It is desirable to find an algebraic, practical description for the motion of noncollinear spin textures to better comprehend the results of spin dynamics simulations. By considering a magnetic quasiparticle as a rigid particle whose shape does not change significantly during the movement, the translational motion driven by the SOT can be described by a modified Thiele equation, 6 , 59 , 60 which is an analytically solvable system of algebraic equations describing the velocity of magnetic quasiparticles where G = (0, 0, –4π N sk ) is the gyroscopic vector with the topological charge N sk defined in eq 1 . v = ( v x , v y ) is the drifting velocity of a skyrmionic quasiparticle within the x–y plane.…”

Section: Resultsmentioning

confidence: 99%

Voltage-Controlled Skyrmionic Interconnect with Multiple Magnetic Information Carriers

Chen

Liu

2022

ACS Appl. Mater. Interfaces

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Magnetic skyrmions have been in the spotlight since they were observed in technologically relevant systems at room temperature. More recently, there has been increasing interest in additional quasiparticles that may exist as stable/metastable spin textures in magnets, such as the skyrmionium and the antiskyrmionite (i.e., a skyrmion bag with two skyrmions inside) that have distinct topological characteristics. The next challenge and opportunity, at the same time, is to investigate the use of multiple magnetic quasiparticles as information carriers in a single device for next-generation nanocomputing. In this paper, we propose a spintronic interconnect device where multiple sequences of information signals are encoded and transmitted simultaneously by skyrmions, skyrmioniums, and antiskyrmionites. The proposed spintronic interconnect device can be pipelined via voltage-controlled magnetic anisotropy (VCMA) gated synchronizers that behave as intermediate registers. We demonstrate theoretically that the interconnect throughput and transmission energy can be effectively tuned by the VCMA gate voltage and appropriate electric current pulses. By carefully adjusting the device structure characteristics, our spintronic interconnect device exhibits comparable energy efficiency with copper interconnects in mainstream CMOS technologies. This study provides fresh insight into the possibilities of skyrmionic devices in future spintronic applications.

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“…However, their large sizes, arbitrary values of Q, and nontrivial morphological structure could make skyrmion bags promising objects for the implementation of the topological superconductivity. Moreover, structures of this type were found experimentally in liquid crystals, where the stability of the structures with the large values of Q [182] was shown. that to date the magnetic skyrmion bags are much less studied than the skyrmions with |Q| = 1 even in the framework of the classical analysis.…”

Section: Skyrmions With An Arbitrary Topological Chargementioning

confidence: 86%

“…Recently, using these approaches, the existence of the nontrivial MS with arbitrary values of the topological index Q has been predicted [164,[180][181][182][183]. The configuration with several skyrmions (|Q| = 1) located inside one skyrmionium (Q = 0, see Fig.…”

Section: Skyrmions With An Arbitrary Topological Chargementioning

confidence: 99%

Aspects of topological superconductivity in 2D systems: noncollinear magnetism, skyrmions, and higher-order topology

Zlotnikov,

Shustin,

Fedoseev

2021

Preprint

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The review is aimed at highlighting the aspects of topological superconductivity in the absence of spin-orbit interaction in two-dimensional systems with long-range non-collinear spin ordering or magnetic skyrmions. Another purpose is to give a brief introduction to the new concept of topological superconductivity, i.e. higher-order topology in two-dimensional systems including spin-orbit coupled structures. The formation of Majorana modes due to magnetic textures is discussed. The role of effective triplet pairings and odd fermion parity of the ground state wave function in different systems is emphasized. We describe the peculiarities of the magnetic skyrmions, leading to the formation of the Majorana modes and defects on which the modes are localized. The problem of braiding in the two-dimensional systems, especially in higher-order topological superconductors, is considered.

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Magnetic skyrmion binning

Cited by 22 publications

References 25 publications

Geometry and symmetry in skyrmion dynamics

Geometry and symmetry in skyrmion dynamics

Voltage-Controlled Skyrmionic Interconnect with Multiple Magnetic Information Carriers

Aspects of topological superconductivity in 2D systems: noncollinear magnetism, skyrmions, and higher-order topology

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