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Indirect Optical Absorption of Single Crystalline beta-FeSi2

Materials Science 2009-11-10 v1
Authors: Haruhiko Udono , Isao Kikuma , Tsuyoshi Okuno , Yasuaki Masumoto , Hiroyuki Tajima
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Abstract

We investigated optical absorption spectra near the fundamental absorption edge of beta-FeSi2 single crystals by transmission measurements. The phonon structure corresponding to the emission and absorption component was clearly observed in the low-temperature absorption spectra. Assuming exciton state in the indirect allowed transition, we determined a phonon energy of 0.031 +- 0.004 eV. A value of 0.814 eV was obtained for the exciton transition energy at 4K.

Keywords

beta-FeSi2 optical absorption indirect transition exciton phonon energy single crystal

Cite

@article{arxiv.cond-mat/0405482,
  title  = {Indirect Optical Absorption of Single Crystalline beta-FeSi2},
  author = {Haruhiko Udono and Isao Kikuma and Tsuyoshi Okuno and Yasuaki Masumoto and Hiroyuki Tajima},
  journal= {arXiv preprint arXiv:cond-mat/0405482},
  year   = {2009}
}

Comments

10 pages with 3 figures

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