Electronic structure of LaO1-x Fx BiSe2 (x=0.18) revealed by photoelectron spectromicroscopy

N. L. Saini, D. Ootsuki, E. Paris, B. Joseph, A. Barinov, M. Tanaka, Y. Takano, T. Mizokawa

研究成果: Article査読

13 被引用数 (Scopus)


We report an electronic structure study on LaO1-xFxBiSe2 (x=0.18) by means of photoelectron spectromicroscopy. The Fermi surfaces and band dispersions are basically consistent with the band-structure calculations on BiS2-based materials, indicating that the electron correlation effects may be irrelevant to describe physics of the new BiSe2 system. In LaO1-xFxBiSe2 (x=0.18), the area of the Fermi pockets is estimated to be 0.16±0.02 per Bi, consistent with the amount of F substitution. Although the spectromicroscopy technique avoids the effect of microscale inhomogeneity for angle-resolved photoemission spectroscopy (ARPES), the ARPES spectral features are rather broad in the momentum space, indicating the likely effect of local disorder in the BiSe2 layer.

ジャーナルPhysical Review B - Condensed Matter and Materials Physics
出版ステータスPublished - 2014 12 19

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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