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

J. E. Mattson, Sudha Kumar, Eric E. Fullerton, S. R. Lee, C. H. Sowers, M. Grimsditch, S. D. Bader, F. T. Parker

Research output: Contribution to journalArticlepeer-review

108 Citations (Scopus)


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 (>10 mW/mm2). 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.

Original languageEnglish
Pages (from-to)185-188
Number of pages4
JournalPhysical review letters
Issue number1
Publication statusPublished - 1993
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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