The Institute of Scientific and Industrial Research, Osaka University


LAST UPDATE 2017/02/26

  • 研究者氏名
    Researcher Name

    田中慎一郎 Shin-ichiro TANAKA
    准教授 Associate Professor
  • 所属
    Professional Affiliation

    The Institute of Scientific and Industrial Research, Osaka University

    第2研究部門(材料・ビーム科学系 励起物性科学研究分野
    Department of excited solid-state dynamics, Division of advanced materials and beam science
  • 研究キーワード
    Research Keywords

    Surface science
    Angle-resolved photoelectron spectroscopy with synchrotron radiation
    Coincidence-electron-spectroscopy for solid state
    Femto-second time-resolved two-photon photoelectron spectroscopy
Research Subject
Electron dynamics for solids and solid surfaces with spectroscopic method.

研究の背景 Background


Functions of material is ruled by the electronic properties and the dynamics on the surface and in the bulk. In order to provide and improve new function of the device, it is crucially important to understand the basic physics of the electronic behavior in the device. For this purpose, the electronic spectroscopy such as the angle-resolved photoelectron spectroscopy with using the synchrotron radiation where the photon energy and the polarization can be varied and with the femto-second laser pulse. A newly developed spectroscopic method, such as the coincidence spectroscopy is also helpful.

研究の目標 Outcome


Electron dynamics of the solid and solid surface, such as the carbon-nanomaterials, is studied by using the photoelectron spectroscopy. Examples of what currently interests me are as follows, 1) direct probe of the electron-lattice interaction (electron scattering by the phonon), 2) properties of the photoexcitation final state by using the photon-energy dependence of the photoelectron spectroscopy, 3) phase property of the electron band probed by the polarization-dependence of the photoelectron intensity, 4) secondary electron emission dynamics investigated by the coincidence spectroscopy which is recently developed method.

研究図Research Figure

Fig.1. Angle-resolved photoelectron spectroscopic study for graphite where the electron-phonon scattering is directly probed for the first time Fig.2. Angle-resolved photoelectron spectroscopic study for the charge density wave transition on the graphite surface. Fig.3. Time-resolved two-photon photoelectron spectroscopic study for the electron dynamics on the Si(001)(2x1) surface.

文献 / Publications

Scientific Reports, 3 (2013) 3031; Phys. Rev. B 84 (2011) 121411(R); Phys. Rev. B79 (2009) 155313; J. Phys. Soc. Jpn., 83 (2014) 084705; J. Electron Spectros.
Related Phenom. 185 (2012) 152-158; Surf. Sci. 606 (2012) 407-413.; Phys Rev. B, 84 (2011) 235444; Phys. Rev. B77 (2008) 195323.