Magnetic skyrmion logic gates: conversion, duplication and merging of skyrmions
TL;DR: In this article, the conversion, duplication and merging of isolated skyrmions with different chirality and topology are demonstrated all in one system, and they also demonstrate the conversion of another form of a Skyrmion into another form, i.e., a bimeron.
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Abstract: Magnetic skyrmions, which are topological particle-like excitations in ferromagnets, have attracted a lot of attention recently. Skyrmionics is an attempt to use magnetic skyrmions as information carriers in next generation spintronic devices. Proposals of manipulations and operations of skyrmions are highly desired. Here, we show that the conversion, duplication and merging of isolated skyrmions with different chirality and topology are possible all in one system. We also demonstrate the conversion of a skyrmion into another form of a skyrmion, i.e., a bimeron. We design spin logic gates such as the AND and OR gates based on manipulations of skyrmions. These results provide important guidelines for utilizing the topology of nanoscale spin textures as information carriers in novel magnetic sensors and spin logic devices.
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Citations
Material systems for FM-/AFM-coupled skyrmions in Co/Pt-based multilayers
Hongying Jia,Bernd Zimmermann,Markus Hoffmann,Moritz Sallermann,Gustav Bihlmayer,Stefan Blügel +5 more
TL;DR: In this paper, first-principles calculations based on density functional theory are used to search for suitable materials that can host antiferromagnetically coupled skyrmions.
Novel electronic structures and magnetic properties in twisted two-dimensional graphene/Janus 2H–VSeTe heterostructures
TL;DR: In this paper, the effects of twist angles on magnetic properties of 2D materials are investigated by density functional theory, and it is found that twist angles ( θ ) can induce a band gap at Dirac cone of graphene.
Quantum Damping of Skyrmion Crystal Eigenmodes due to Spontaneous Quasiparticle Decay.
TL;DR: In this paper, the decay behavior of skyrmion crystals with respect to three fundamental modes, i.e., the anticlockwise, breathing, and clockwise modes, was investigated.
Dynamic excitations and inertial effects of antiskyrmions in a synthetic antiferromagnet
A. Agorou,T. Trypiniotis +1 more
TL;DR: The dynamics of antiskyrmions in a synthetic antiferromagnet are studied. Four eigenmodes are identified and the suppression of the first gyrotropic mode in the absence of interlayer coupling is observed. The dipolar interaction between antiskyrmions and the generalized Thiele equation are used to explain the results.
Stability and dynamics of magnetic skyrmions in FM/AFM heterostructures
Rajgowrav Cheenikundil,Z.C. Lu,Manuel Pereiro,Anna Delin,Danny Thonig +4 more
TL;DR: Researchers propose a multilayer FM/AFM structure to stabilize magnetic skyrmions with superior stability and suppress the skyrmion Hall effect, enabling high-velocity transport of AFM-coupled skyrmions for potential spintronic applications.
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