A magnetic bimeron is an in-plane topological counterpart of a magnetic skyrmion.Despite the topological equivalence,their statics and dynamics could be distinct,making them attractive from the perspectives of both ph...A magnetic bimeron is an in-plane topological counterpart of a magnetic skyrmion.Despite the topological equivalence,their statics and dynamics could be distinct,making them attractive from the perspectives of both physics and spintronic applications.In this work,we demonstrate the stabilization of bimeron solitons and clusters in the antiferromagnetic(AFM)thin film with interfacial Dzyaloshinskii–Moriya interaction(DMI).Bimerons demonstrate high current-driven mobility as generic AFM solitons,while featuring anisotropic and relativistic dynamics excited by currents with in-plane and out-ofplane polarizations,respectively.Moreover,these spin textures can absorb other bimeron solitons or clusters along the translational direction to acquire a wide range of Néel topological numbers.The clustering involves the rearrangement of topological structures,and gives rise to remarkable changes in static and dynamical properties.The merits of AFM bimeron clusters reveal a potential path to unify multibit data creation,transmission,storage,and even topology-based computation within the same material system,and may stimulate spintronic devices enabling innovative paradigms of data manipulations.展开更多
基金X.L.acknowledges the support by the Guangdong Basic and Applied Basic Research Foundation(Grant No.2019A1515111110)X.Z.acknowledges the support by the National Natural Science Foundation of China(Grant No.12004320)+15 种基金the Guangdong Basic and Applied Basic Research Foundation(Grant No.2019A1515110713)Presidential Postdoctoral Fellowship of The Chinese University of Hong Kong,Shenzhen(CUHKSZ)M.E.acknowledges the support from the Grants-in-Aid for Scientific Research from JSPS KAKENHI(Grant Nos.JP18H03676,JP17K05490,and JP15H05854)the support from CREST,JST(Grant Nos.JPMJCR16F1 and JPMJCR1874)O.A.T.acknowledges the support by the Australian Research Council(Grant No.DP200101027)the Cooperative Research Project Program at the Research Institute of Electrical Communication,Tohoku University(Japan),and by the Ministry of Science and Technology Higher Education of the Russian Federation in the framework of Increase Competitiveness Program of NUST“MISiS”(No.K2-2019-006)implemented by a governmental decree dated 16th of March 2013,N 211.X.X.acknowledges the support from the National Natural Science Foundation of China(51871137 and 61434002)the National Key R&D Program of China(2017YFB0405604)M.M.and M.K.acknowledge support from National Science Center of Poland No.2018/30/Q/ST3/00416Y.Z.acknowledges the support by the President’s Fund of CUHKSZ,Longgang Key Laboratory of Applied Spintronics,National Natural Science Foundation of China(Grant Nos.11974298 and 61961136006)Shenzhen Fundamental Research Fund(Grant No.JCYJ20170410171958839)Shenzhen Peacock Group Plan(Grant No.KQTD20180413181702403)Y.X.acknowledges the support by the State Key Program for Basic Research of China(Grant No.2014CB921101,2016YFA0300803)NSFC(Grants No.61427812,11574137)Jiangsu NSF(BK20140054)Jiangsu Shuangchuang Team Program and the UK EPSRC(EP/G010064/1).
文摘A magnetic bimeron is an in-plane topological counterpart of a magnetic skyrmion.Despite the topological equivalence,their statics and dynamics could be distinct,making them attractive from the perspectives of both physics and spintronic applications.In this work,we demonstrate the stabilization of bimeron solitons and clusters in the antiferromagnetic(AFM)thin film with interfacial Dzyaloshinskii–Moriya interaction(DMI).Bimerons demonstrate high current-driven mobility as generic AFM solitons,while featuring anisotropic and relativistic dynamics excited by currents with in-plane and out-ofplane polarizations,respectively.Moreover,these spin textures can absorb other bimeron solitons or clusters along the translational direction to acquire a wide range of Néel topological numbers.The clustering involves the rearrangement of topological structures,and gives rise to remarkable changes in static and dynamical properties.The merits of AFM bimeron clusters reveal a potential path to unify multibit data creation,transmission,storage,and even topology-based computation within the same material system,and may stimulate spintronic devices enabling innovative paradigms of data manipulations.
