Green Nanosystem Laboratory
|Staff & Contact|
|Educational Staff||Associate Prof. Fumihiko Matsui|
Education and Research Activities in the Laboratory
Our laboratory investigates nano-scale structures and their properties at the surface based on spectroscopy and diffraction methods using originally developed electron analyzers.
At the interface where two different materials meet, unique electronic and magnetic phenomena such as photovoltaic and rectification effects appear, owing to structural anisotropy and interface-specific composition. Such nano-scale regions become good active reaction sites for catalysis. We investigate local electronic properties by a non-destructive, atomic site-specific method: photoelectron diffraction spectroscopy. The purpose of our research is to provide useful knowledge for developing and improving new devices for green innovation based on these interface phenomena.
Thanks to many collaborators abroad as well as in Japan, we promote our research using synchrotron facilities. We contribute to the operation of the unique photoelectron diffraction station at SPring-8, Japan. We also have strong ties with the photoelectron diffraction group at Swiss Light Source.
1. Revealing unique phenomena related to photoelectron diffraction and developing new analysis methods based on such phenomena
2. Construction of a new projection type electron analyzer: PESCATORA
3. Atomic level characterization of local structure and properties of functional material interfaces
Explanatory Pictures of Research Activities
- Fig. 1 Visualization of atomic structures by photoelectron holography
- Fig. 2 Discovery and investigation of new phenomena. (a) inverse contrast in an energy loss electron. (b) Circular dichroism in resonant Auger electron diffraction.
Fig. 3 The new original analyzer PESCATORA
Recent Research Papers and Achievements
1. F. Matsui, N. Maejima, H. Matsui, H. Nishikawa, H. Daimon, T. Matsushita, M. Muntwiler, R. Stania, Roland , T. Greber, “Circular Dichroism in Cu Resonant Auger Electron Diffraction”, Zeitschrift für Physikalische Chemie, 230 (2016) 519-535.
2. F. Matsui, M. Fujita, T. Ohta, N. Maejima, H. Matsui, H. Nishikawa, T. Matsushita, H. Daimon, “Selective Detection of Angular-Momentum-Polarized Auger Electrons by Atomic Stereography” Phys. Rev. Lett. 114,
3. F. Matsui, T. Matsushita, H. Daimon,”Photoelectron structure factor and diffraction spectroscopy”J. Electron Spectroscopy and Related Phenomena 195, 347 (2014).
4. S. Roth, F. Matsui, T. Greber, J. Osterwalder, “Chemical Vapor Deposition and Characterization of Aligned and Incommensurate Graphene/Hexagonal Boron Nitride Heterostack on Cu(111)” Nano Letters 13, 2668 (2013).
5. F. Matsui, T. Matsushita, Y. Kato, F. Z. Guo, M. Hashimoto, K. Inaji, H. Daimon, “Atomic-layer resolved magnetic and electronic structure analysis of Ni thin film on a Cu(001) surface by diffraction spectroscopy” Phys. Rev. Lett. 100, 207201 (2008).