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000885879 1001_ $$0P:(DE-HGF)0$$aChen, Gong$$b0$$eCorresponding author
000885879 245__ $$aLarge Dzyaloshinskii-Moriya interaction induced by chemisorbed oxygen on a ferromagnet surface
000885879 260__ $$aWashington, DC [u.a.]$$bAssoc.$$c2020
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000885879 520__ $$ahe Dzyaloshinskii-Moriya interaction (DMI) is an antisymmetric exchange interaction that stabilizes chiral spin textures. It is induced by inversion symmetry breaking in noncentrosymmetric lattices or at interfaces. Recently, interfacial DMI has been found in magnetic layers adjacent to transition metals due to the spin-orbit coupling and at interfaces with graphene due to the Rashba effect. We report direct observation of strong DMI induced by chemisorption of oxygen on a ferromagnetic layer at room temperature. The sign of this DMI and its unexpectedly large magnitude—despite the low atomic number of oxygen—are derived by examining the oxygen coverage–dependent evolution of magnetic chirality. We find that DMI at the oxygen/ferromagnet interface is comparable to those at ferromagnet/transition metal interfaces; it has enabled direct tailoring of skyrmion’s winding number at room temperature via oxygen chemisorption. This result extends the understanding of the DMI, opening up opportunities for the chemisorption-related design of spin-orbitronic devices.
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000885879 536__ $$0G:(DE-Juel1)jara0197_20191101$$aSystematic investigation of magnetic thin films and multi-layers - towards sub-10nm skyrmions for future data storage devices (jara0197_20191101)$$cjara0197_20191101$$fSystematic investigation of magnetic thin films and multi-layers - towards sub-10nm skyrmions for future data storage devices$$x2
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000885879 7001_ $$00000-0002-2614-2862$$aMascaraque, Arantzazu$$b1
000885879 7001_ $$0P:(DE-Juel1)168434$$aJia, Hongying$$b2$$ufzj
000885879 7001_ $$0P:(DE-Juel1)131065$$aZimmermann, Bernd$$b3
000885879 7001_ $$0P:(DE-HGF)0$$aRobertson, MacCallum$$b4
000885879 7001_ $$00000-0002-5050-9978$$aConte, Roberto Lo$$b5
000885879 7001_ $$0P:(DE-Juel1)162311$$aHoffmann, Markus$$b6
000885879 7001_ $$00000-0002-4027-3711$$aGonzález Barrio, Miguel Angel$$b7
000885879 7001_ $$00000-0001-7524-0779$$aDing, Haifeng$$b8
000885879 7001_ $$0P:(DE-HGF)0$$aWiesendanger, Roland$$b9
000885879 7001_ $$00000-0003-4207-7658$$aMichel, Enrique G.$$b10
000885879 7001_ $$0P:(DE-Juel1)130548$$aBlügel, Stefan$$b11$$ufzj
000885879 7001_ $$00000-0003-0035-3095$$aSchmid, Andreas K.$$b12
000885879 7001_ $$0P:(DE-HGF)0$$aLiu, Kai$$b13$$eCorresponding author
000885879 773__ $$0PERI:(DE-600)2810933-8$$a10.1126/sciadv.aba4924$$gVol. 6, no. 33, p. eaba4924 -$$n33$$peaba4924$$tScience advances$$v6$$x2375-2548$$y2020
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