Magnetic and electronic properties of <i>D</i>22-Mn3Ge (001) films

  • H. Kurt
    School of Physics and CRANN, Trinity College , Dublin 2, Ireland
  • N. Baadji
    School of Physics and CRANN, Trinity College , Dublin 2, Ireland
  • K. Rode
    School of Physics and CRANN, Trinity College , Dublin 2, Ireland
  • M. Venkatesan
    School of Physics and CRANN, Trinity College , Dublin 2, Ireland
  • P. Stamenov
    School of Physics and CRANN, Trinity College , Dublin 2, Ireland
  • S. Sanvito
    School of Physics and CRANN, Trinity College , Dublin 2, Ireland
  • J. M. D. Coey
    School of Physics and CRANN, Trinity College , Dublin 2, Ireland

書誌事項

公開日
2012-09-24
DOI
  • 10.1063/1.4754123
公開者
AIP Publishing

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説明

<jats:p>Oriented thin films of Mn3Ge with the tetragonal D022 structure, grown on strontium titanate substrates, exhibit a low magnetization Ms = 73 kA m−1 combined with high uniaxial anisotropy Ku = 0.91 MJ m−3 at 300 K, making them potentially useful for thermally stable sub-10 nm spin torque memory elements. The highly ordered epitaxial Mn3Ge (001) films show 46% diffusive spin polarization at the Fermi level, measured by point contact Andreev reflection. Density functional calculations show that the compounds are ferrimagnetic, with anisotropic spin polarization at the Fermi level.</jats:p>

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