Giant Magnetoresistance of (001)Fe/(001)Cr Magnetic Superlattices
M. N. BaibichLaboratoire de Physique des Solides, Université Paris-Sud, F-91405 Orsay, FranceJ.M. BrotoLaboratoire de Physique des Solides, Université Paris-Sud, F-91405 Orsay, FranceA. FertLaboratoire de Physique des Solides, Université Paris-Sud, F-91405 Orsay, FranceF. Nguyen Van DauLaboratoire de Physique des Solides, Université Paris-Sud, F-91405 Orsay, FranceF. PétroffLaboratoire de Physique des Solides, Université Paris-Sud, F-91405 Orsay, FranceP. ÉtienneLaboratoire de Physique des Solides, Université Paris-Sud, F-91405 Orsay, FranceG. CreuzetLaboratoire de Physique des Solides, Université Paris-Sud, F-91405 Orsay, FranceA. FriederichLaboratoire de Physique des Solides, Université Paris-Sud, F-91405 Orsay, FranceJ. ChazelasLaboratoire de Physique des Solides, Université Paris-Sud, F-91405 Orsay, France
1988en
ABI
Аннотация
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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