ISSP - The institute for Solid State Physics

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Yoshinobu Group
Professor
YOSHINOBU,
Jun

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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”, on which 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. Recently, we are interested in surface reactions including CO2 and hydrogen.In addition, we can simulate chemical reactions on cosmic dust with laboratory experiments in ultrahigh vacuum at low temperature. We have utilized surface vibrational spectroscopy, photoelectron spectroscopy and local probe methods in order to investigate structures, reactions and electronic properties of atoms,molecules and thin films on surfaces. Synchrotron radiation (KEK-PF, SPring8 etc.) is also used to study electronic structure of surface and interface, including operando XPS.

A schematic model of CO2 hydrogenation on the Pd-Zn-Cu model catalyst

Research Subjects

  1. Activation and surface reaction of small molecules by model catalysts
  2. Properties and reactions with hydrogen at surfaces and interfaces (Hydrogenomics)
  3. Electronic states and surface conductivity of semiconductor and organic thin film
  4. Electronic states and reactivity of low-dimensional materials on surfaces
  5. Dynamical processes of atoms and molecules on solid surfaces