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Giant Magnetoresistance Of (001)Fe/(001)Cr Magnetic Superlattices.

Baibich, Broto, Fert, Nguyen Van Dau F, Petroff, Etienne., Creuzet, Friederich, Chazelas
Published 1988 · Materials Science, Medicine

We have studied the magnetoresistance of (001)Fe/(001)Cr superlattices prepared by molecularbeam epitaxy. A huge magnetoresistance is found in superlattices with thin Cr layers: For example, with ${t}_{\mathrm{Cr}}=9$ \AA{}, at $T=4.2$ K, the resistivity is lowered by almost a factor of 2 in a magnetic field of 2 T. We ascribe this giant magnetoresistance to spin-dependent transmission of the conduction electrons between Fe layers through Cr layers.

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