Parameter dependence of optical conductivity in antiferromagnetic phase of iron pnictides

K. Sugimoto, E. Kaneshita, T. Tohyama

研究成果: Article査読

抄録

We investigate the optical conductivity of iron pnictides in antiferromagnetic state by mean-field calculation in a five-band Hubbard model, focusing on its anisotropic behavior by examining several states calculated with different Hund coupling J, such as the states with a low or high magnetization and with or without a strong orbital ordering. In addition, we investigate the J dependence of the Dirac cone structure, which is crucial for the low energy excitation. In our calculations, a weakly ordered state with no orbital ordering shows the anisotropy of optical conductivity in accord with experiments. We conclude that the low energy part of the optical conductivity is relevant to the Dirac electron structure rather than the orbital ordering.

本文言語English
ページ(範囲)666-669
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
471
21-22
DOI
出版ステータスPublished - 2011 11月
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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