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dc.contributor.authorHao, Xiawei
dc.contributor.authorZhuo, Fengjun
dc.contributor.authorManchon, Aurelien
dc.contributor.authorWang, Xiaolin
dc.contributor.authorLi, Hang
dc.contributor.authorCheng, Zhenxiang
dc.date.accessioned2021-04-15T12:57:28Z
dc.date.available2021-04-15T12:57:28Z
dc.date.issued2021-04-14
dc.date.submitted30 October 2020
dc.identifier.citationHao, X., Zhuo, F., Manchon, A., Wang, X., Li, H., & Cheng, Z. (2021). Skyrmion battery effect via inhomogeneous magnetic anisotropy. Applied Physics Reviews, 8(2), 021402. doi:10.1063/5.0035622
dc.identifier.issn1931-9401
dc.identifier.doi10.1063/5.0035622
dc.identifier.urihttp://hdl.handle.net/10754/668802
dc.description.abstractMagnetic skyrmions are considered a promising candidate for the next-generation information processing technology. Being topologically robust, magnetic skyrmions are swirling spin textures that can be used in a broad range of applications from memory devices and logic circuits to neuromorphic computing. In a magnetic medium lacking inversion symmetry, magnetic skyrmion arises as a result of the interplay among magnetic exchange interaction, Dzyaloshinskii-Moriya interaction, and magnetic anisotropy. Instrumental to the integrated skyrmion-based applications are the creation and manipulation of magnetic skyrmions at a designated location, absent any need of a magnetic field. In this paper, we propose a generic design strategy to achieve that goal and a model system to demonstrate its feasibility. By implementing a disk-shaped thin film heterostructure with an inhomogeneous perpendicular magnetic anisotropy, stable sub-100-nm size skyrmions can be generated without magnetic field. This structure can be etched out via, for example, focused ion beam microscope. Using micromagnetic simulation, we show that such heterostructure not only stabilizes the edge spins of the skyrmion but also protects its rotation symmetry. Furthermore, we may switch the spin texture between skyrmionic and vortex-like ones by tuning the slope of perpendicular anisotropy using a bias voltage. When embedded into a magnetic conductor and under a spin polarized current, such heterostructure emits skyrmions continuously and may function as a skyrmion source. This unique phenomenon is dubbed a skyrmion battery effect. Our proposal may open a novel venue for the realization of all-electric skyrmion-based devices.
dc.description.sponsorshipX. Hao and H. Li acknowledge the support from Henan University (Grant No. CJ3050A0240050) and National Natural Science Foundation of China (Grant No. 11804078). A. Manchon acknowledges support from the Excellence Initiative of Aix-Marseille Université—A*Midex, a French “Investissements d'Avenir” program. F. Zhuo acknowledges the support from King Abdullah University of Science and Technology (KAUST). Z. X. Cheng acknowledges the support from Grant No. ARC(DP190100150). H. Li acknowledges the support from KAUST at the beginning of his career.
dc.language.isoen
dc.publisherAIP Publishing
dc.relation.urlhttps://aip.scitation.org/doi/10.1063/5.0035622
dc.rightsThis is the author’s peer reviewed, accepted manuscript. However, the online version of record will be different from this version once it has been copyedited and typeset. PLEASE CITE THIS ARTICLE AS DOI: 10.1063/5.0035622
dc.titleSkyrmion battery effect via inhomogeneous magnetic anisotropy
dc.typeArticle
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSpintronics Theory Group
dc.identifier.journalApplied Physics Reviews
dc.eprint.versionPost-print
dc.contributor.institutionSchool of Physics and Electronics, Henan University, Kaifeng 475004, China
dc.contributor.institutionInterdisciplinary Nanoscience Center of Marseille (CINaM), Aix-Marseille University, Marseille 13288, France
dc.contributor.institutionInstitute for Superconducting and Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW 2500, Australia
dc.identifier.volume8
dc.identifier.issue2
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
dc.identifier.pages021402
pubs.publication-statusPublished
kaust.personZhuo, Fengjun
kaust.personManchon, Aurelien
dc.date.accepted22 March 2021
refterms.dateFOA2021-04-15T12:57:29Z


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