dc.contributor.author | Wang, Xiansi | |
dc.contributor.author | Qaiumzadeh, Alireza | |
dc.contributor.author | Brataas, Arne | |
dc.date.accessioned | 2019-10-03T12:30:34Z | |
dc.date.available | 2019-10-03T12:30:34Z | |
dc.date.created | 2019-09-30T18:05:00Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 0031-9007 | |
dc.identifier.uri | http://hdl.handle.net/11250/2620095 | |
dc.description.abstract | opological magnetic textures have attracted considerable interest since they exhibit new properties and might be useful in information technology. Magnetic hopfions are three-dimensional (3D) spatial variations in the magnetization with a nontrivial Hopf index. We find that, in ferromagnetic materials, two types of hopfions, Bloch-type and Néel-type hopfions, can be excited as metastable states in the presence of bulk and interfacial Dzyaloshinskii-Moriya interactions, respectively. We further investigate how hopfions can be driven by currents via spin-transfer torques (STTs) and spin-Hall torques (SHTs). Distinct from 2D ferromagnetic skyrmions, hopfions have a vanishing gyrovector. Consequently, there are no undesirable Hall effects. Néel-type hopfions move along the current direction via both STT and SHT, while Bloch-type hopfions move either transverse to the current direction via SHT or parallel to the current direction via STT. Our findings open the door to utilizing hopfions as information carriers. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | American Physical Society | nb_NO |
dc.title | Current-Driven Dynamics of Magnetic Hopfions | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.source.volume | 123 | nb_NO |
dc.source.journal | Physical Review Letters | nb_NO |
dc.source.issue | 147203 | nb_NO |
dc.identifier.doi | https://doi.org/10.1103/PhysRevLett.123.147203 | |
dc.identifier.cristin | 1731937 | |
dc.relation.project | Norges forskningsråd: 262633 | nb_NO |
dc.relation.project | EC/H2020/669442 | nb_NO |
dc.description.localcode | © American Physical Society 2019. This is the authors accepted and refereed manuscript to the article. | nb_NO |
cristin.unitcode | 194,66,20,0 | |
cristin.unitname | Institutt for fysikk | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |