Electronic structure of B 2pσ and pπ states in MgB2, AlB2, and ZrB2 single crystals

Jin Nakamura, Shin ya Nasubida, Eiki Kabasawa, Hisashi Yamazaki, Nobuyoshi Yamada, Kazuhiko Kuroki, Masamitsu Watanabe, Tamio Oguchi, Sergey Lee, Ayako Yamamoto, Setsuko Tajima, Yuji Umeda, Shin Minakawa, Noriaki Kimura, Haruyoshi Aoki, Shigeki Otani, Shik Shin, Thomas A. Callcott, David L. Ederer, Jonathan D. DenlingerRupert C.C. Perera

研究成果: Article査読

16 被引用数 (Scopus)

抄録

The effect of electron correlation (EC) on the electronic structure in MgB2, AlB2, and ZrB2, is studied by examining the partial density of states (PDOS) of B 2pσ and pπ orbitals using the polarization dependence of x-ray emission and absorption spectra. The discrepancies between observed and calculated PDOS’s cannot be attributed to EC effects. The present results suggest that the EC effect is less than the experimental error (∼0.2 eV), which indirectly supports a scenario that electron-phonon interaction plays an essential role in the occurrence of superconductivity.

本文言語English
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
68
6
DOI
出版ステータスPublished - 2003

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

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