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Short-period GaMnAs/GaAs superlattices: Optical and magnetic characterization

Författare:
Publiceringsår: 2003
Språk: Engelska
Sidor: 209-212
Publikation/Tidskrift/Serie: Journal of Superconductivity (Proceedings of the PASPS Conference held July 2002 in Würzburg, Germany)
Volym: 16
Nummer: 1
Dokumenttyp: Konferensbidrag
Förlag: Springer Netherlands

Sammanfattning

Superlattices with magnetic layers containing from 8 to 16 GaMnAs monolayers corresponding to the mixed crystal composition between 5 and 6% of Mn and from 4 to 10 GaAs monolayers were grown by the low temperature MBE technique and characterized by Raman scattering. Folded acoustic phonons were observed for all superlattices in the Raman scattering spectra. The interlayer exchange coupling, found previously by the wide-angle neutron diffraction in selected superlattices was investigated by the spin-polarized neutron reflectometry. It was always of ferromagnetic type, no trace of antiferromagnetic coupling was found.

Disputation

Nyckelord

  • Physics and Astronomy
  • neutron scattering
  • ferromagnetic semiconductor
  • interlayer exchange
  • coupling
  • folded acoustic phonons
  • Raman scattering

Övrigt

PASPS Conference
2002-07-01
Würzburg, Germany
Published
Yes
  • ISSN: 0896-1107

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