Non-Drude optical conductivity of (III,Mn)V ferromagnetic semiconductors

Sung Ryul Yang, Jairo Sinova, T. Jungwirth, Y. P. Shim, A. H. MacDonald

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

We present a numerical model study of the zero-temperature infrared optical properties of (III,Mn)V diluted magnetic semiconductors. Our calculations demonstrate the importance of treating disorder and interaction effects simultaneously in modeling these materials. We find that the conductivity has no clear Drude peak, that it has a broadened inter-band peak near 220 meV, and that oscillator weight is shifted to higher frequencies by stronger disorder. These results are in good qualitative agreement with recent thin film absorption measurements. We use our numerical findings to discuss the use of f-sum rules evaluated by integrating optical absorption data for accurate carrier-density estimates.

Original languageEnglish
Article number045205
Pages (from-to)452051-452057
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume67
Issue number4
Publication statusPublished - 2003 Jan 15

    Fingerprint

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Yang, S. R., Sinova, J., Jungwirth, T., Shim, Y. P., & MacDonald, A. H. (2003). Non-Drude optical conductivity of (III,Mn)V ferromagnetic semiconductors. Physical Review B - Condensed Matter and Materials Physics, 67(4), 452051-452057. [045205].