High-resolution angle-resolved photoemission study of η-Mo4O11

H. Fujisawa, H. Kumigashira, T. Takahashi, R. Kurita, M. Koyano

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3 Citations (Scopus)


We have performed high-resolution angle-resolved photoemission spectroscopy (ARPES) on a quasi two-dimensional (2D) conductor η-Mo4O11. The band dispersions near EF and the Fermi-surface topology determined by ARPES show a qualitatively good agreement with the band-structure calculation, although the observed width of Mo 4d bands forming the Fermi surface is two-to-three times larger in the calculation. We have clearly identified two nesting vectors in the ARPES-derived Fermi surface, which show a good agreement with the CDW wave vectors obtained from x-ray diffraction experiments. The present ARPES results indicate that the CDW instability in η-Mo4O11 is driven by "the hidden 1D Fermi-surface nesting" due to the quasi 1D chains in the crystal.

Original languageEnglish
Pages (from-to)1041-1045
Number of pages5
JournalSurface Review and Letters
Issue number2
Publication statusPublished - 2002 Apr


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