TY - JOUR
T1 - High-resolution angle-resolved photoemission study of η-Mo4O11
AU - Fujisawa, H.
AU - Kumigashira, H.
AU - Takahashi, T.
AU - Kurita, R.
AU - Koyano, M.
N1 - Funding Information:
This work was supported by grants from the CREST of JST and the MEXT of Japan. H. K. thanks the Japan Society for the Promotion of Science for nancial support.
PY - 2002/4
Y1 - 2002/4
N2 - 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.
AB - 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.
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U2 - 10.1142/S0218625X02003317
DO - 10.1142/S0218625X02003317
M3 - Article
AN - SCOPUS:0036553540
VL - 9
SP - 1041
EP - 1045
JO - Surface Review and Letters
JF - Surface Review and Letters
SN - 0218-625X
IS - 2
ER -