Voltage control of skyrmions: Creation, annihilation, and zero-magnetic field stabilization

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorZhou, Yifanen_US
dc.contributor.authorMansell, Rhodrien_US
dc.contributor.authorvan Dijken, Sebastiaanen_US
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.groupauthorNanomagnetism and Spintronicsen
dc.date.accessioned2021-05-19T06:31:01Z
dc.date.available2021-05-19T06:31:01Z
dc.date.embargoinfo:eu-repo/date/embargoEnd/2022-04-27en_US
dc.date.issued2021-04-26en_US
dc.descriptionFunding Information: This work was supported by the Academy of Finland (Grant Nos. 295269, 306978, and 327804). We acknowledge the provision of facilities by Aalto University at OtaNano, the Micronova Nanofabrication Center and the Nanomicroscopy Center, as well as computational resources provided by the Aalto Science-IT project. Publisher Copyright: © 2021 Author(s). Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
dc.description.abstractVoltage manipulation of skyrmions is a promising path toward low-energy spintronic devices. Here, voltage effects on skyrmions in a GdOx/Gd/Co/Pt heterostructure are observed experimentally. The results show that the skyrmion density can be both enhanced and depleted by the application of an electric field, along with the ability, at certain magnetic fields to completely switch the skyrmion state on and off. Further, a zero magnetic field skyrmion state can be stabilized at a negative bias voltage using a defined voltage and magnetic field sequence. The voltage effects measured here occur on a few-second timescale, suggesting an origin in voltage-controlled magnetic anisotropy rather than ionic effects. By investigating the skyrmion nucleation rate as a function of temperature, we extract the energy barrier to skyrmion nucleation in our sample. Further, micromagnetic simulations are used to explore the effect of changing the anisotropy and Dzyaloshinskii-Moriya interaction on skyrmion density. Our work demonstrates the control of skyrmions by voltages, showing functionalities desirable for commercial devices.en
dc.description.versionPeer revieweden
dc.format.extent5
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationZhou, Y, Mansell, R & van Dijken, S 2021, ' Voltage control of skyrmions : Creation, annihilation, and zero-magnetic field stabilization ', Applied Physics Letters, vol. 118, no. 17, 172409 . https://doi.org/10.1063/5.0047892en
dc.identifier.doi10.1063/5.0047892en_US
dc.identifier.issn0003-6951
dc.identifier.issn1077-3118
dc.identifier.otherPURE UUID: c55db58c-22f1-4b08-b2f8-58feee0594cben_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/c55db58c-22f1-4b08-b2f8-58feee0594cben_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85104985682&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/62839698/Zhou_Voltage_Control.5.0047892.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/107566
dc.identifier.urnURN:NBN:fi:aalto-202105196830
dc.language.isoenen
dc.publisherAMER INST PHYSICS
dc.relation.ispartofseriesApplied Physics Lettersen
dc.relation.ispartofseriesVolume 118, issue 17en
dc.rightsopenAccessen
dc.titleVoltage control of skyrmions: Creation, annihilation, and zero-magnetic field stabilizationen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi

Files