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

doi:10.1103/PhysRevB.66.041202

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

51 Citations (Scopus)

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 language	English
Article number	041202
Pages (from-to)	412021-412024
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	66
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevB.66.041202
Publication status	Published - 2002 Jul 15

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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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.",

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AU - MacDonald, A. H.

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N2 - 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.

AB - 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.

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Infrared conductivity of metallic (III,Mn)V ferromagnets

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