Delicate Relation between Single Spins

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Artists view of the measurement set up with the metallic tip of the scanning tunnelling microscope on top of a chain made out of three cobalt adatoms on a copper surface. The bump to the left is a single cobalt atom. Credit: Max Planck Institute for  ...
Artists view of the measurement set up with the metallic tip of the scanning tunnelling microscope on top of a chain made out of three cobalt adatoms on a copper surface. The bump to the left is a single cobalt atom. Credit: Max Planck Institute for Solid State Research

Probing the magnetic interaction between single atoms is no longer a dream. Using a scanning tunnelling microscope, the interaction of the spins of two neighbouring cobalt atoms adsorbed at a copper surface has been measured as a function of their distance with atomic precision. This development opens up new possibilities to probe the quantum nature of magnetic phenomena and to explore the physical limits of magnetic data storage.


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All News summaries for March 01, 2007

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