Research Group:
Atomic Resolution Holography Research Group
Contact:
| Naohisa Happo |
| Hiroshima City University 3-4-1, Ozuka-Higashi, Asaminami-ku, Hiroshima 731-3194 Japan |
| Telephone: +81-82-830-1553 |
| happo (at) hiroshima-cu.ac.jp |
Research Area:
Life Science, Fundamental Characterization, Applied Materials, Measurements
Beamline:
BL25SU, BL47XU, BL37XU, BL39XU
Overview of Research Group, Goals and Purposes:
Atomic Resolution Holography Research Group focuses on advanced atomic structure analysis technologies, such as X-ray fluorescence and photoelectron holography. With this method, we can directly visualize the three-dimensional atomic arrangement around an element of interest. Using this technique, one can determine dopant sites in crystals that cannot be determined by X-ray diffraction based on periodic structures. Researchers have reported on the structures of dopants in semiconductors, superconductors, magnetic materials, and their application materials, lattice distortion in ferroelectrics, and metal-containing proteins, as well as provided new insight into the mechanisms underlying their physical properties. In addition, we have developed a platform that allows researchers to access this new atomic arrangement information in response to the BL reorganization.
The objective of this research group is to develop atomic resolution holography as a powerful tool for structural analysis and to create new users by combining hardware and software. We have applied developed techniques, including valence-selective measurements and measurements in external fields, in the sixth term of the project. As the platform has developed steadily, the number of researchers using it has increased significantly. We will apply the developed technology to more materials and develop and establish more measurement technologies in the seventh research term. We intend to collect requests from various fields and reflect them in our research and development by exchanging ideas with the group participants.