hedgehog

Spin-hedgehog found in graphene

The recent paper of the researchers of Helmholtz-Zentrum Berlin für Materialien und Energie confirmed the predictions of our group. The hedgehog and the anti-hedgehog had already been present in the previously realized graphene systems. However, they were inseparably superimposed. Only by breaking of the sublattice symmetry, the hedgehog could be separated from the anti-hedgehog.