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Néel State
Shown is a periodic Néel state. This is a two-dimensional non-collinear 1200 structure of co-planar spins forming angles between nearest neighbors. A unit cell shown in red contains 3 atoms. The total magnetization M in the unit cell is zero. In this picture, the spins are oriented in the surface plane. The orientation of the spin with respect to the lattice is determined by the spin-orbit interaction.
Copyright: Forschungszentrum Jülich, PGI-1/IAS-1