Infrared conductivity of metallic (III,Mn)V ferromagnets

Jairo Sinova, T. Jungwirth, T. Jungwirth, S. R.Eric Yang, S. R.Eric Yang, J. Kučera, A. H. MacDonald

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Abstract

We present a theory of the infrared conductivity and absorption coefficients of metallic (III,Mn)V ferromagnetic semiconductors. We find that the conductivity is dominated by intervalence-band transitions that produce peaks at ℏω∼220 meV and obscure the broadened Drude peak. We demonstrate that transverse f-sum rule measurements can be used to extract accurate values for the free-carrier density, bypassing the severe characterization difficulties that have till now been created by the large anomalous Hall effect in these materials.

Original languageEnglish
Article number041202
Pages (from-to)412021-412024
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number4
DOIs
Publication statusPublished - 2002 Jul 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Sinova, J., Jungwirth, T., Jungwirth, T., Yang, S. R. E., Yang, S. R. E., Kučera, J., & MacDonald, A. H. (2002). Infrared conductivity of metallic (III,Mn)V ferromagnets. Physical Review B - Condensed Matter and Materials Physics, 66(4), 412021-412024. [041202]. https://doi.org/10.1103/PhysRevB.66.041202