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
Single skyrmion true random number generator using local dynamics and interaction between skyrmions
TL;DR: In this paper , a single skyrmion interacting with local pinning centers under thermal effects can fluctuate in time and switch between a small-skyrmions and a large-skymion state, thereby serving as a robust true random number generator for probabilistic computing.
Spin Transfer Torque and Field Driven 360° Domain Wall to Bimeron Conversion
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Periodic chiral magnetic domains in single-crystal nickel nanowires
Jimmy Kan,Marko V. Lubarda,Keith Chan,Vojtech Uhlir,Andreas Scholl,Vitaliy Lomakin,Eric E. Fullerton +6 more
TL;DR: In this article, the authors report on experimental and computational investigations of the domain structure of single-crystal Ni nanowires (NWs) and show that an oscillatory magnetization configuration with a period closely matching experimental observation (approximately 240 nm) is obtainable at remanence.
Dynamics of an antiferromagnetic skyrmion in a racetrack with a defect
TL;DR: In this paper, the effect of two types of defects caused by the local decrease/increase of perpendicular magnetic anisotropy on the current-induced dynamics of an antiferromagnetic skyrmion was numerically studied.
Biskyrmion lattices in centrosymmetric magnetic films
Daniel Capic,Dmitry A. Garanin,Eugene M. Chudnovsky +2 more
- 08 Oct 2019
TL;DR: In this paper, a mathematical framework to describe biskyrmion lattices was proposed, where the lowest energy corresponding to a triangular lattice of bubbles is lower than the energy of a magnetized film in a zero magnetic field.
References
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