Electronic structure of superconducting FeSe studied by high-resolution photoemission spectroscopy

Rikiya Yoshida, Takanori Wakita, Hiroyuki Okazaki, Yoshikazu Mizuguchi, Shunsuke Tsuda, Yoshihiko Takano, Hiroyuki Takeya, Kazuto Hirata, Takayuki Muro, Mario Okawa, Kyoko Ishizaka, Shik Shin, Hisatomo HArima, Masaaki Hirai, Yuji Muraoka, Takayoshi Yokoya

    Research output: Contribution to journalArticlepeer-review

    39 Citations (Scopus)

    Abstract

    We have performed soft x-ray and ultrahigh-resolution laser-excited photoemission measurements on tetragonal FeSe, which was recently identified as a superconductor. Energy dependent study of valence band is compared to band structure calculations and yields a reasonable assignment of partial densities of states. However, the sharp peak near the Fermi level slightly deviates from the calculated energy position, giving rise to the necessity of self-energy correction. We have also performed ultrahighresolution laser photoemission experiment on FeSe and observed the suppression of intensity around the Fermi level upon cooling.

    Original languageEnglish
    Article number034708
    Journaljournal of the physical society of japan
    Volume78
    Issue number3
    DOIs
    Publication statusPublished - 2009 Mar 1

    Keywords

    • Electronic structure
    • FeSe
    • Iron-based superconductor
    • Photoemission spectroscopy

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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