Comparative ARPES studies of LaOxF1-xBiS2 (x = 0.23 and 0.46)

K. Terashima, T. Wakita, M. Sunagawa, H. Fujiwara, T. Nagayama, K. Ono, H. Kumigashira, M. Nagao, S. Watauchi, I. Tanaka, H. Okazaki, Y. Takano, Y. Mizuguchi, H. Usui, K. Kuroki, Y. Muraoka, T. Yokoya

    Research output: Contribution to journalConference articlepeer-review

    3 Citations (Scopus)


    BiS2-based layered superconductors are new superconductors, having been paid special attention due to the layered crystal structure and the characteristic electronic structure that can lead to exotic mechanism of superconductivity as well as cooperation of superconductivity and ordered phases. In this article, we report valence band dispersions and Fermi surface topology of LaO1-xFxBiS2 (x = 0.23, Tc < 2 K) studied by angle-resolved photoemission spectroscopy, and compared them with those of LaO1-xFxBiS2 (x = 0.46, Tc = 3.1 K). We discuss experimental x dependent electronic structures and its relation to Tc. We also point to anomalous spectroscopic features in LaO1-xFxBiS2 (x = 0.46) that can be explained by band structure calculations considering distorted lattice, suggesting role of dynamical or static lattice distortion to the physical properties.

    Original languageEnglish
    Article number012002
    JournalJournal of Physics: Conference Series
    Issue number1
    Publication statusPublished - 2016 Feb 5
    EventTMU International Symposium on New Quantum Phases Emerging from Novel Crystal Structure - Tokyo, Japan
    Duration: 2015 Sep 242015 Sep 25

    ASJC Scopus subject areas

    • Physics and Astronomy(all)


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