title: Magnetic skyrmion logic gates: conversion, duplication and merging of skyrmions.
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.
authors: Department of Physics, University of Hong Kong, Hong Kong, China.
authors: Xichao
authors: X
authors: Zhang
authors: Department of Applied Physics, University of Tokyo, Hongo 7-3-1, Tokyo 113-8656, Japan.
authors: Motohiko
authors: M
authors: Ezawa
authors: 1] Department of Physics, University of Hong Kong, Hong Kong, China [2] Center of Theoretical and Computational Physics, University of Hong Kong, Hong Kong, China.
authors: Yan
authors: Y
authors: Zhou