Publikation:

Ferromagnetic Resonance in Ga1−x Mn x As

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2003

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Graf, Thomas
Wassner, Thomas
Brandt, Martin S.
Stutzmann, Martin
Köder, Andreas
Schoch, Wladimir
Waag, Andreas
Frank, Sebastian

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Journal of Superconductivity and Novel Magnetism. Springer. 2003, 16(1), pp. 75-78. ISSN 0896-1107. eISSN 1557-1947. Available under: doi: 10.1023/A:1023284617994

Zusammenfassung

We report on ferromagnetic resonance measurements of Ga1−x Mn x As thin films with Mn contents 0.022 ≤ x ≤ 0.051. For x ≥ 0.036 and the external magnetic field normal to the thin film, we observe several resonances, which we identify as spin wave resonances. The non-quadratic mode spacing can be consistently explained by a linear gradient in the magnetic properties of the films. From the measurements, the exchange constant A can be deduced for different Mn contents x.

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530 Physik

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dilute magnetic semiconductor, GaMnAs, spin waves, ferromagnetic resonance, exchange constant

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ISO 690GOENNENWEIN, Sebastian T. B., Thomas GRAF, Thomas WASSNER, Martin S. BRANDT, Martin STUTZMANN, Andreas KÖDER, Wladimir SCHOCH, Andreas WAAG, Sebastian FRANK, 2003. Ferromagnetic Resonance in Ga1−x Mn x As. In: Journal of Superconductivity and Novel Magnetism. Springer. 2003, 16(1), pp. 75-78. ISSN 0896-1107. eISSN 1557-1947. Available under: doi: 10.1023/A:1023284617994
BibTex
@article{Goennenwein2003Ferro-53545,
  year={2003},
  doi={10.1023/A:1023284617994},
  title={Ferromagnetic Resonance in Ga<sub>1−x</sub> Mn<sub> x </sub>As},
  number={1},
  volume={16},
  issn={0896-1107},
  journal={Journal of Superconductivity and Novel Magnetism},
  pages={75--78},
  author={Goennenwein, Sebastian T. B. and Graf, Thomas and Wassner, Thomas and Brandt, Martin S. and Stutzmann, Martin and Köder, Andreas and Schoch, Wladimir and Waag, Andreas and Frank, Sebastian}
}
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