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@INPROCEEDINGS{MontanezHuaman:1019311,
      author       = {Montanez Huaman, Liz Margarita and Ahrens, Valentin and
                      Becherer, Markus and Pütter, Sabine},
      title        = {{ROOM} {TEMPERATURE} {INVESTIGATION} {OF} {SKYRMION}-
                      {HOSTING} {PT}/{CO}/{TA} {MULTILAYERS}},
      reportid     = {FZJ-2023-05285},
      year         = {2023},
      abstract     = {Multilayers composed of heavy metals and ferromagnetic
                      materials with strong perpendicular anisotropy are potential
                      candidates for magnetic memory applications [1,2]. In
                      particular, magnetic skyrmions may enable ultra-dense
                      storage devices due to the extremely low spin currents
                      needed to move/manipulated them [2]. Skyrmions emerge from
                      the competition between the Dzyaloshinskii–Moriya
                      interaction and exchange interactions generated at the
                      interface of thin ferromagnetic layers and heavy metals with
                      large spin-orbit coupling [3]. Pt/Co-based multilayers
                      generally exhibit worm domains, which can nucleate into
                      skyrmions through breaking/nucleation processes [4]. Recent
                      studies have demonstrated the nucleation of skyrmions by
                      varying external magnetic field, temperature, and current in
                      sputtered Pt/Co/Ta multilayers [4,5].In this work,
                      [Pt/Co/Ta]x multilayers with perpendicular magnetic
                      anisotropy were grown by molecular beam epitaxy. We have
                      demonstrated the feasibility of manipulating magnetic
                      domains in our multilayers by changing the number of
                      repetitions x and the Co layer thickness between 5 Å to 21
                      Å. Using magnetic force microscopy (MFM), we observed worm
                      domains or stripe domains. These domains can be broken into
                      skyrmions, by applying an out- of-plane field or into stripe
                      domains by applying in-plane fields. We achieved partially
                      ordered skyrmions at a low external field of ~38 mT for the
                      multilayer with a cobalt thickness of 17 Å (see Figure 1).
                      Furthermore, isolated skyrmions in this multilayer remain
                      even after the external magnetic field has been
                      removed.References[1] A. Fert and V. Sampai (2013) Nat.
                      Nanotechnol. 8, 152–156[2] C Wang C, Seinige H. and Tsoi
                      M. (2013), J. Phys. D: Appl. Phys. 46, 285001[3] Xichao
                      Zhang X., Zhou Y., Song K.M., Park T.E., Xia J., Ezawa M.,
                      Liu X., Zhao W., Zhao G. and Woo S. (2020), J. Phys.
                      Condens. Matter 32, 143001[4] Ma M., Ang C., Li Y., Pan Z.,
                      Gan W., Lew W.S. and Ma F. (2020), J. Appl. Phys. 127,
                      223901[5] Brandao J., Dugato D.A., Puydinger dos Santos
                      M.V., Berón F. and Cesar J.C. (2022), Appl. Surf. Sci. 585,
                      152598},
      month         = {Jun},
      date          = {2023-06-19},
      organization  = {Sol-SkyMag 2023, San Sebastian
                       (Spain), 19 Jun 2023 - 23 Jun 2023},
      subtyp        = {After Call},
      cin          = {JCNS-4 / JCNS-FRM-II / MLZ},
      cid          = {I:(DE-Juel1)JCNS-4-20201012 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
                      (POF4-6G4) / 632 - Materials – Quantum, Complex and
                      Functional Materials (POF4-632)},
      pid          = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
      experiment   = {EXP:(DE-MLZ)MBE-MLZ-20151210},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/1019311},
}