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Neuartige MagnetkopplungStrength and orientation of the RKKY interaction induced by an atom in the centre of the image. A: Calculated interaction assuming a simple conduction electron system without considering any anisotropy. B: The interaction predicted by complex calculations shows considerably higher anisotropy and corresponds very well to the interaction measured in experiments.
Copyright: Photo: SPM Group, Prof. R. Wiesendanger, special research project 668, University of Hamburg