Electronic structure of η-Mo4O11 studied by high-resolution angle-resolved photoemission spectroscopy

T. Sato, T. Dobashi, H. Komatsu, T. Takahashi, M. Koyano

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


We have performed high-resolution angle-resolved photoemission spectroscopy (ARPES) on a quasi-two-dimensional (2D) conductor η-Mo4O 11, which undergoes a two-stage charge density wave (CDW) transition at 109 and 35 K. We have succeeded in experimentally mapping out the two-dimensional Fermi surface (FS) as well as directly observing two different CDW gaps. We found that the two-dimensional FS of η-Mo4O 11 consists of two "hidden one-dimensional (1D) FSs" originating in two almost independent conducting paths in the crystal. We also found that the gap energy and the temperature dependence are different for the two CDW gaps. The present ARPES results indicate that the characteristic CDW transition in η-Mo4O11 is driven by the instability of two "hidden 1D FSs".

Original languageEnglish
Pages (from-to)549-552
Number of pages4
JournalJournal of Electron Spectroscopy and Related Phenomena
Publication statusPublished - 2005 Jun


  • Charge density wave
  • Fermi surface
  • Photoemission


Dive into the research topics of 'Electronic structure of η-Mo4O11 studied by high-resolution angle-resolved photoemission spectroscopy'. Together they form a unique fingerprint.

Cite this