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Electrical Control of the Magnetic State of Fe

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11 Author(s)
Gerhard, L. ; Phys. Inst., Karlsruhe Inst. of Technol. (KIT), Karlsruhe, Germany ; Yamada, T.K. ; Balashov, T. ; Takacs, A.F.
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Magneto-electric coupling offers a new pathway to information storage in magnetic memory devices. This phenomenon has been observed in various materials ranging from insulators to semiconductors. In bulk metallic systems, magneto-electric coupling has been disregarded as the electric field cannot enter bulk metals. In this work, we show that a substantial magneto-electric coupling exists in metallic Fe nano-islands grown on Cu(111). Using the electric field in the tunnel junction of a scanning tunneling microscope, the magnetic order parameter and the crystal structure of Fe was changed on the nanometer scale. This allows high density nonvolatile information storage by means of magneto-electric coupling in a simple metallic system.

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Magnetics, IEEE Transactions on  (Volume:47 ,  Issue: 6 )