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      Multidomain Skyrmion Lattice State in Cu2OSeO3

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          Abstract

          Magnetic skyrmions in chiral magnets are nanoscale, topologically protected magnetization swirls that are promising candidates for spintronics memory carriers. Therefore, observing and manipulating the skyrmion state on the surface level of the materials are of great importance for future applications. Here, we report a controlled way of creating a multidomain skyrmion state near the surface of a Cu2OSeO3 single crystal, observed by soft resonant elastic X-ray scattering. This technique is an ideal tool to probe the magnetic order at the L3 edge of 3d metal compounds giving an average depth sensitivity of ∼50 nm. The single-domain 6-fold-symmetric skyrmion lattice can be broken up into domains, overcoming the propagation directions imposed by the cubic anisotropy by applying the magnetic field in directions deviating from the major cubic axes. Our findings open the door to a new way to manipulate and engineer the skyrmion state locally on the surface or on the level of individual skyrmions, which will enable applications in the future.

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          Author and article information

          Journal
          Nano Letters
          Nano Lett.
          American Chemical Society (ACS)
          1530-6984
          1530-6992
          April 27 2016
          May 11 2016
          April 15 2016
          May 11 2016
          : 16
          : 5
          : 3285-3291
          Affiliations
          [1 ]Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
          [2 ]Physik Department, Technische Universität München, 85748 Garching, Germany
          [3 ]Diamond Light Source, Didcot OX11 0DE, United Kingdom
          [4 ]Institut für Angewandte Photophysik, TU Dresden, 01069 Dresden, Germany
          [5 ]Crystal Growth Facility, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
          [6 ]Magnetic Spectroscopy Group, Diamond Light Source, Didcot OX11 0DE, United Kingdom
          Article
          10.1021/acs.nanolett.6b00845
          27070961
          1aa0a65e-9c1a-4c2a-9386-3d945a6efa55
          © 2016

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