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Author (up) Mellado, P.; Concha, A.; Rica, S. doi  openurl
  Title Magnetoelectric Effect in Dipolar Clusters Type
  Year 2020 Publication PHYSICAL REVIEW LETTERS Abbreviated Journal Phys. Rev. Lett.  
  Volume 125 Issue 23 Pages 237602  
  Keywords Magnetoelectric effect; Physical Systems; Clusters; Condensed Matter & Materials Physics  
  Abstract We combine the anisotropy of magnetic interactions and the point symmetry of finite solids in the study of dipolar clusters as new basic units for multiferroics metamaterials. The Hamiltonian of magnetic dipoles with an easy axis at the vertices of polygons and polyhedra, maps exactly into a Hamiltonian with symmetric and antisymmetric exchange couplings. The last one gives rise to a Dzyaloshinskii-Moriya contribution responsible for the magnetic modes of the systems and their symmetry groups, which coincide with those of a particle in a crystal field with spin-orbit interaction. We find that the clusters carry spin current and that they manifest the magnetoelectric effect. We expect our results to pave the way for the rational design of magnetoelectric devices at room temperature  
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  ISSN 0031-9007 ISBN Medium  
  Area Expedition Conference  
  Notes Approved  
  Call Number UAI @ alexi.delcanto @ Serial 1277  
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