ISSP - The institute for Solid State Physics

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Yoshinobu Group

Research Associate

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Solid surfaces are intriguing objects, because novel structures and electronic properties emerge as a result of symmetry breaking of bulk. Solid surfaces play an important role as “low dimensional reaction field”, where we can provide atoms and molecules and manipulate them deliberately. In addition, surface and interface are vital in the energy conversion and dissiparion processes. In order to fabricate atomically-controlled surface functional materials, we have to understand the dynamical behavior of atoms and molecules on surfaces. The research of these subjects is closely related to the basics of catalysis, semiconductor processes and molecular electronics. We have utilized surface vibrational spectroscopy, photoelectron spectroscopy, scanning tunneling microscopy, independently driven four-probe measurement and etc. in order to investigate structures, reactions and electronic properties of atoms and molecules on surfaces. Synchrotron radiation spectroscopy including operando XPS is used to study electronic states of surface and interface.

Ambient pressure XPS spectra of Cu(997) in 0.8mbar CO2 at 340K: (left) O 1s and (right) C 1s Top. Catal. 59 (2016) 526].

Research Subjects

  1. Activation and surface reaction of small molecules by model catalysts
  2. Dynamical processes of atoms and molecules on solid surfaces
  3. Electronic states and surface conductivity of semiconductor and organic thin film
  4. Electronic states and reactivity of low-dimensional materials on surfaces
  5. Chemical reaction on solid surfaces under ambient conditions