Abstract

We have studied the magnetoresistance of (001)Fe/(001)Cr superlattices prepared by molecular-beam epitaxy. A huge magnetoresistance is found in superlattices with thin Cr layers: For example, with tCr=9 Å, 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.

Keywords

MagnetoresistanceSuperlatticeCondensed matter physicsGiant magnetoresistanceMaterials scienceElectrical resistivity and conductivityEpitaxyElectronColossal magnetoresistanceMagnetic fieldPhysicsNanotechnologyLayer (electronics)

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Year
1988
Type
article
Volume
61
Issue
21
Pages
2472-2475
Citations
9081
Access
Closed

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M. N. Baibich, J.M. Broto, A. Fert et al. (1988). Giant Magnetoresistance of (001)Fe/(001)Cr Magnetic Superlattices. Physical Review Letters , 61 (21) , 2472-2475. https://doi.org/10.1103/physrevlett.61.2472

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DOI
10.1103/physrevlett.61.2472