Photoinduced antiferromagnetic interlayer coupling in Fe/(Fe-Si) superlattices

We report photoinduced antiferromagnetic (AF) interlayer coupling in sputtered Fe/(Fe-Si) superlattices. The superlattices are intrinsically AF coupled at room temperature and become increasingly ferromagnetically coupled when cooled below 100 K, but the AF coupling is restored at low temperature by...

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Veröffentlicht in:	Physical review letters 1993-07, Vol.71 (1), p.185-188
Hauptverfasser:	MATTSON, J. E, KUMAR, S, FULLERTON, E. E, LEE, S. R, SOWERS, C. H, GRIMSDITCH, S. M, BADER, S. D, PARKER, F. T
Format:	Artikel
Sprache:	eng
Schlagworte:	360104 - Metals & Alloys- Physical Properties 360606 - Other Materials- Physical Properties- (1992-) ALLOYS ANTIFERROMAGNETISM Applied sciences CHARGE CARRIERS Condensed matter: electronic structure, electrical, magnetic, and optical properties COUPLING DIELECTRIC PROPERTIES ELECTRICAL PROPERTIES ELECTROMAGNETIC RADIATION ELEMENTS Exact sciences and technology IRON IRON ALLOYS KERR EFFECT Magnetic properties and materials Magnetic properties of surface, thin films and multilayers MAGNETISM MATERIALS SCIENCE METALS Metals. Metallurgy MOESSBAUER EFFECT PHOTOELECTRIC EFFECT PHOTOELECTROMAGNETIC EFFECTS PHYSICAL PROPERTIES PHYSICAL RADIATION EFFECTS Physics RADIATION EFFECTS RADIATIONS SILICON ALLOYS SUPERLATTICES TEMPERATURE DEPENDENCE TRANSITION ELEMENTS VISIBLE RADIATION
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Beschreibung
Zusammenfassung:	We report photoinduced antiferromagnetic (AF) interlayer coupling in sputtered Fe/(Fe-Si) superlattices. The superlattices are intrinsically AF coupled at room temperature and become increasingly ferromagnetically coupled when cooled below 100 K, but the AF coupling is restored at low temperature by exposure to visible light of sufficient intensity ([gt]10 mW/mm[sup 2]). These effects are due to charge carriers in the Fe-Si spacer layer which, when thermally or optically generated, are capable of communicating spin information between the Fe layers.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/physrevlett.71.185