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  Magnetism and interface properties of epitaxial Fe films on high-mobility GaAs/Al0.35Ga0.65As(001) two-dimensional electron gas heterostructures

Roldan Cuenya, B., Doi, M., Keune, W., Hoch, S., Reuter, D., Wieck, A., et al. (2003). Magnetism and interface properties of epitaxial Fe films on high-mobility GaAs/Al0.35Ga0.65As(001) two-dimensional electron gas heterostructures. Applied Physics Letters, 82(7): 1072. doi:10.1063/1.1542934.

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1.1542934.pdf (Publisher version), 396KB
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 Creators:
Roldan Cuenya, Beatriz1, Author           
Doi, M.1, Author
Keune, W.1, Author
Hoch, S.2, Author
Reuter, D.2, Author
Wieck, A.2, Author
Schmitte, T.3, Author
Zabel, H.3, Author
Affiliations:
1Department of Physics, University of Duisburg-Essen, ou_persistent22              
2Angewandte Festkörperphysik, Ruhr-Universität Bochum,, D-44780 Bochum, Germany, ou_persistent22              
3Experimentalphysik/Festkörperphysik, Ruhr-Universität Bochum, D-44780 Bochum, Germany, ou_persistent22              

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 Abstract: An optimized heterostructure design and an optimized surface sputter-cleaning procedure allow thegrowth of high-quality epitaxial Fe(001) thin films at Ts 50 ° C on selectively doped GaAs/Al0.35Ga0.65 As heterostructures, while retaining the high quality transport property of thetwo-dimensional electron gas. Magneto-optic Kerr effect measurements and model calculationsindicate a dominant uniaxial in-plane anisotropy (easy axis along [110], hard axis along [1-10] and small coercivity (~15 Oe). Interface sensitive 57Fe Mössbauer measurements prove the absenceof both magnetic ‘‘dead layers’’ and ‘‘half-magnetization’’ phases (compared to pure Fe), and provide evidence for intermixing within a few monolayers, retaining, however, a metallic Fe stateand high Fe magnetic moments at the interface.

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Language(s): eng - English
 Dates: 2002-08-052002-12-112003-02-17
 Publication Status: Issued
 Pages: 3
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1063/1.1542934
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Title: Applied Physics Letters
  Abbreviation : Appl. Phys. Lett.
Source Genre: Journal
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Publ. Info: Melville, NY : American Institute of Physics
Pages: 3 Volume / Issue: 82 (7) Sequence Number: 1072 Start / End Page: - Identifier: ISSN: 0003-6951
CoNE: https://pure.mpg.de/cone/journals/resource/954922836223