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000865324 1001_ $$0P:(DE-HGF)0$$aYe, Jingfan$$b0
000865324 245__ $$aTopologically stable helices in exchange coupled rare-earth/rare-earth multilayer with superspin-glass like ordering
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000865324 520__ $$aExistence of 2π-planar domain walls (DWs) are often reported for transition metal-rare-earth(TM/RE) layered systems. The magnetization process of such two-dimensional randomlyanisotropical system in the form of 2π-DWs is directly correlated with topologically stablehelices. Here, instead of TM/RE, we have investigated [Dy/Tb]10multilayers involving twodifferent anisotropic layers of rare-earth/rare-earth (RE/RE). Using magnetization and sus-ceptibility as function of temperature along with thermo-remanent magnetization measure-ments  we  have  confirmed  superspin-glass  type  of  behavior  within  this  RE/RE  system.Additionally, an exchange biasfield up to–0.88 kOe (–88 mT) was also revealed for suchrare-earth based multilayers. Interestingly, using detailed analysis of the polarized neutronreflectometry profiles, wefind evidences of superimposed helical magnetic configurationswithin both materials of Dy and Tb associated with spin-frustrated interfaces. Furthermore,magnetizationfluctuations  around  the  mean  magnetization  from  vertically  uncorrelateddomains were observed with polarized off-specular neutron scattering. We believe that coexistence of helical ground states with super spin-glass-like ordering are fundamentally instrumental for topologically stability in RE/RE systems, which in principle, can be exploited in all-spin-based technology.
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000865324 7001_ $$0P:(DE-HGF)0$$aBaldauf, Thomas$$b1
000865324 7001_ $$0P:(DE-Juel1)130821$$aMattauch, Stefan$$b2
000865324 7001_ $$0P:(DE-HGF)0$$aPaul, Neelima$$b3
000865324 7001_ $$00000-0002-6202-5081$$aPaul, Amitesh$$b4$$eCorresponding author
000865324 773__ $$0PERI:(DE-600)2921913-9$$a10.1038/s42005-019-0210-0$$gVol. 2, no. 1, p. 114$$n1$$p114$$tCommunications Physics$$v2$$x2399-3650$$y2019
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