@article{Glunk2009Magne-52543,
  year={2009},
  doi={10.1103/PhysRevB.79.195206},
  title={Magnetic anisotropy in (Ga,Mn)As : Influence of epitaxial strain and hole concentration},
  number={19},
  volume={79},
  issn={2469-9950},
  journal={Physical Review B},
  author={Glunk, Michael and Daeubler, Joachim and Dreher, Lukas and Schwaiger, Stephan and Schoch, Wladimir and Sauer, Rolf and Limmer, Wolfgang and Brandlmaier, Andreas and Gönnenwein, Sebastian T. B. and Bihler, Christoph},
  note={Article Number: 195206}
}

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    <dc:contributor>Limmer, Wolfgang</dc:contributor>
    <dc:contributor>Bihler, Christoph</dc:contributor>
    <dc:creator>Schwaiger, Stephan</dc:creator>
    <dc:creator>Schoch, Wladimir</dc:creator>
    <dc:creator>Dreher, Lukas</dc:creator>
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    <dc:creator>Limmer, Wolfgang</dc:creator>
    <dc:contributor>Gönnenwein, Sebastian T. B.</dc:contributor>
    <dc:creator>Glunk, Michael</dc:creator>
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    <dc:contributor>Daeubler, Joachim</dc:contributor>
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    <dcterms:abstract xml:lang="eng">We present a systematic study on the influence of epitaxial strain and hole concentration on the magnetic anisotropy in (Ga,Mn)As at 4.2 K. The strain was gradually varied over a wide range from tensile to compressive by growing a series of (Ga,Mn)As layers with 5% Mn on relaxed graded (In,Ga)As/GaAs templates with different In concentration. The hole density, the Curie temperature, and the relaxed lattice constant of the as-grown and annealed (Ga,Mn)As layers turned out to be essentially unaffected by the strain. Angle-dependent magnetotransport measurements performed at different magnetic-field strengths were used to probe the magnetic anisotropy. The measurements reveal a pronounced linear dependence of the uniaxial out-of-plane anisotropy on both strain and hole density. Whereas the uniaxial and cubic in-plane anisotropies are nearly constant, the cubic out-of-plane anisotropy changes sign when the magnetic easy axis flips from in-plane to out-of-plane. The experimental results for the magnetic anisotropy are quantitatively compared with calculations of the free energy based on a mean-field Zener model. Almost perfect agreement between experiment and theory is found for the uniaxial out-of-plane and cubic in-plane anisotropy parameters of the as-grown samples. In addition, magnetostriction constants are derived from the anisotropy data.</dcterms:abstract>
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    <dc:creator>Brandlmaier, Andreas</dc:creator>
    <dc:contributor>Schwaiger, Stephan</dc:contributor>
    <dc:creator>Daeubler, Joachim</dc:creator>
    <dcterms:title>Magnetic anisotropy in (Ga,Mn)As : Influence of epitaxial strain and hole concentration</dcterms:title>
    <dc:contributor>Brandlmaier, Andreas</dc:contributor>
    <dc:contributor>Dreher, Lukas</dc:contributor>
    <dc:creator>Bihler, Christoph</dc:creator>
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    <dc:contributor>Sauer, Rolf</dc:contributor>
    <dc:contributor>Glunk, Michael</dc:contributor>
    <dc:creator>Sauer, Rolf</dc:creator>
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