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Infrared conductivity of metallic (III,Mn)V ferromagnets

Jairo Sinova, T. Jungwirth, S.-R. Eric Yang, J. Kučera, and A. H. MacDonald
Phys. Rev. B 66, 041202(R) – Published 18 July 2002
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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 ħω220meV 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.

  • Received 12 April 2002

DOI:https://doi.org/10.1103/PhysRevB.66.041202

©2002 American Physical Society

Authors & Affiliations

Jairo Sinova1, T. Jungwirth1,2, S.-R. Eric Yang1,3, J. Kučera2, and A. H. MacDonald1

  • 1Department of Physics, The University of Texas at Austin, Austin, Texas 78712
  • 2Institute of Physics, The Academy of Sciences of the Czech Republic, Cukrovarnická 10, 162 53 Praha 6, Czech Republic
  • 3Department of Physics, Korea University, Seoul 136-701, Korea

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Vol. 66, Iss. 4 — 15 July 2002

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