Abstract
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 language | English |
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Pages (from-to) | 1041-1045 |
Number of pages | 5 |
Journal | Surface Review and Letters |
Volume | 9 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2002 Apr 1 |
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry