Atomic scale spin-dependent STM on magne
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S. Murphy; S.F. Ceballos; G. Mariotto; N. Berdunov; K. Jordan; I.V. Shvets; Y.M.
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Article
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2005
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John Wiley and Sons
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English
β 368 KB
## Abstract STM tips made from antiferromagnetic MnNi have been used to investigate the atomic structure of the (001) and (111) surfaces of Fe~3~O~4~. The clean (001) surface displays a (β2 Γ β2)R45Β° superlattice, which is attributed to chargeβordering on the surface, where Fe^2+^βFe^2+^ and Fe^3+^