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

M. N. Baibich, J. M. Broto, A. Fert, F. Nguyen Van Dau, F. Petroff, P. Etienne, G. Creuzet, A. Friederich, and J. Chazelas
Phys. Rev. Lett. 61, 2472 – Published 21 November 1988
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Abstract

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 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.

  • Received 24 August 1988

DOI:https://doi.org/10.1103/PhysRevLett.61.2472

©1988 American Physical Society

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This article appears in the following collection:

Letters from the Past - A PRL Retrospective

2008 marked PRL’s 50th anniversary. As part of the celebrations a collection of milestone Letters was started. The collection contains Letters that have made long-lived contributions to physics, either by announcing significant discoveries, or by initiating new areas of research.

Authors & Affiliations

M. N. Baibich*, J. M. Broto, A. Fert, F. Nguyen Van Dau, and F. Petroff

  • Laboratoire de Physique des Solides, Université Paris-Sud, F-91405 Orsay, France

P. Etienne, G. Creuzet, A. Friederich, and J. Chazelas

  • Laboratoire Central de Recherches, Thomson CSF, B.P. 10, F-91401 Orsay, France

  • *Permanent address: Instituto de Fisica, Universidade Federal do Rio Grande do Sul, C.P. 15051, 91500 Porto Alegre, Rio Grande do Sul, Brazil.

See Also

Nobel Focus: Sensitive Magnetic Sandwich

Don Monroe
Phys. Rev. Focus 20, 13 (2007)

References

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Issue

Vol. 61, Iss. 21 — 21 November 1988

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