Evidence for selective imaging of different magnetic ions on the atomic scale by using a scanning tunnelling microscope with a ferromagnetic probe tip.
Citation:R Wiesendanger, I V Shvets, D Burgler, G Tarrach, H-J Guntherodt and J M D Coey., Evidence for selective imaging of different magnetic ions on the atomic scale by using a scanning tunnelling microscope with a ferromagnetic probe tip., Europhysics Letters, 19, 1992, 141 - 146
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Atomic resolution has been obtained on a magnetite (Fe3O4(001)) surface using a scanning tunnelling microscope with nonmagnetic tungsten and ferromagnetic iron tips. Selective imaging of Fe2 + and Fe3 + on B-sites is achieved by using the ferromagnetic Fe probe tip, reflecting the different spin configurations of the two magnetic ions. Local order in the distribution of Fe2 + and Fe3 + on the (001) surface is found at room temperature, well above the bulk order-disorder (Verwey) transition.
Type of material:Journal Article
Series/Report no:Europhysics Letters;
Availability:Full text available