Giant Magnetoresistance of (001)Fe/(001)Cr Magnetic Superlattices

作者：M. N. Baibich, J.M. Broto, ALBERT FERT, Frédéric Nguyen Van Dau, F. Pétroff, Patrick Etienne, G. Creuzet, Andreas Friederich, J. Chazelas · 发表于：Physical Review Letters · 年份：1988 · DOI：10.1103/physrevlett.61.2472 · 被引用次数：9361 · 研究领域：Magnetic properties of thin films、Quantum and electron transport phenomena、Surface and Thin Film Phenomena

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.