High resolution hard X-ray photoemission spectroscopy at SPring-8: Basic performance and characterization

Yasutaka Takata, Koji Horiba, Masaharu Matsunami, Shik Shin, Makina Yabashi, Kenji Tamasaku, Yoshinori Nishino, Daigo Miwa, Tetsuya Isikawa, Eiji Ikenaga, Keisuke Kobayashi, Masashi Arita, Kenya Shimada, Hirofumi Namatame, Masaki Taniguchi, Hiroshi Nohira, Takeo Hattori, Sven Södergren, Björn Wannberg

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    3 Citations (Scopus)

    Abstract

    Photoemission Spectroscopy (PES) is a powerful method to investigate electronic structure of materials. However, conventional vacuum ultraviolet (VUV) and soft x-ray (SX) PES is surface sensitive because of the short inelastic-mean-free-paths of photoelectrons. This requires us to prepare clean surface and sometimes obscures intrinsic bulk states. In order to realize bulk-sensitive or surface-insensitive PES, we have developed hard x-ray (HX) PES using high-brilliance synchrotron radiation at BL29XU in SPring-8. Large probing depth of high energy photoelectrons enables us to probe intrinsic bulk states almost free from surface condition. A combination of x-ray optics and an electron energy analyzer dedicated for HX-PES achieved the total instrumental energy resolution of 63 and 55 meV (FWHM) at 5.95 and 7.94 keV, respectively. A special arrangement of an analyzer and a sample was employed and increased photoelectron intensity drastically. We describe present performance of our apparatus and characterize HX-PES by showing typical spectra.

    Original languageEnglish
    Title of host publicationSYNCHROTRON RADIATION INSTRUMENTATION
    Subtitle of host publicationNinth International Conference on Synchrotron Radiation Instrumentation
    Pages1597-1602
    Number of pages6
    DOIs
    Publication statusPublished - 2007 Mar 26
    EventSYNCHROTRON RADIATION INSTRUMENTATION: 9th International Conference on Synchrotron Radiation Instrumentation - Daegu, Korea, Republic of
    Duration: 2006 May 282006 Jun 28

    Publication series

    NameAIP Conference Proceedings
    Volume879
    ISSN (Print)0094-243X
    ISSN (Electronic)1551-7616

    Other

    OtherSYNCHROTRON RADIATION INSTRUMENTATION: 9th International Conference on Synchrotron Radiation Instrumentation
    CountryKorea, Republic of
    CityDaegu
    Period06/5/2806/6/28

    Keywords

    • Electronic structure
    • Hard X-ray
    • Photoemission spectroscopy

    ASJC Scopus subject areas

    • Ecology, Evolution, Behavior and Systematics
    • Ecology
    • Plant Science
    • Physics and Astronomy(all)
    • Nature and Landscape Conservation

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