Solid surfaces are intriguing objects, because novel structures and electronic properties emerge as a result of symmetry breaking of bulk. In addition, a solid surface plays an important role as “low dimensional reaction field”, on which we can provide atoms and molecules and manipulate them deliberately. In order to fabricate atomically-controlled surface 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. 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 scanning tunneling microscopy in order to investigate structures, reactions and electronic properties of atoms and molecules on surfaces. Synchrotron radiation (KEK-PF, SPring8 etc.) is also used to study electronic structure of surface and interface.
The potential energy surface of adsorbed NO species on Pt(997)
Kinetic and geometric isotope effects observed in the case of cyclohexane on Rh(111)
*Epitaxial Rh-doped SrTiO3 thin film photocathode for water splitting under visible light irradiation: S. Kawasaki, K. Nakatsuji, J. Yoshinobu, F. Komori, R. Takahashi, M. Lippmaa, K. Mase and A. Kudo, Appl. Phys. Lett.101 (2012) 033910 (1-4).
Kinetic and geometric isotope effects originating from different potential energy surfaces: cyclohexane on Rh(111): T. Koitaya, S. Shimizu, K. Mukai, S. Yoshimoto and J. Yoshinobu, J. Chem. Phys.136 (2012) 214705 (9 pages).
*Elucidation of Rh-Induced In-Gap States of Rh:SrTiO3 Visible-Light-Driven Photocatalyst by Soft X-ray Spectroscopy and First-Principles Calculations: S. Kawasaki, K. Akagi, K. Nakatsuji, S. Yamamoto, I. Matsuda, Y. Harada, J. Yoshinobu, F. Komori, R. Takahashi, M. Lippmaa, C. Sakai, H. Niwa, M. Oshima, K. Iwashina and A. Kudo, J. Phys. Chem. C116 (2012) 24445-24448.