Shik Shin Group
Group of Solid State Physics (The Institute for Solid State Physics) [Laser and Synchrotron]
Let’s start No.1 cutting-edge spectroscopy and
materials science with us
When I was a student, my senior friend informed me that soft X-ray spectroscopy and photoemission study had just started by the advent of synchrotron accelerator and might change the future of the physics and materials science. At first, the resolution was too bad to be applied to spectroscopy and materials science. However, it is already known at present that soft X-ray spectroscopy and photoemission spectroscopy is the most powerful to study the solid state electrons in solids. Recently, photoemission spectroscopy makes remarkable progress after the advent of the soft X-ray laser. The resolution of the laser-photoemission in Shin laboratory is the highest of the world absolutely. Soft X-ray spectroscopy using laser and photoemission study open the new future in physics. I would like to stress that the development of the cutting edge spectroscopy can create the scientific new field. I hope the students are ambitious to open new science for the future.
Professor Shik Shin
- 1977 Department of Physics, Faculty of Science, Univer sity of Tokyo
- 1983 Dr. Sci, University of Tokyo
- 1983 Research associate of Research Institute of Scientific Measurement, Tohoku University
- 1989 Associate Professor of Research institute of Scientific Measurement, Tohoku University
- 1991 Associate professor of Institute for Solid State Physics, University of Tokyo
- 2001 Professor of Institute for Solid State Physics, University of Tokyo
Introduction of the study
Photoemission is well known as the Einstein’s theoretical studies on photoelectric effect. Ultraviolet or soft X-ray light that have higher energy than work function emits the photoelectrons from solids. These photoelectrons bring all the information of solids, that is energy(E), momentum(k), spin(ξ), space(r), and time(t). Because these solid state electrons decide all the solid state properties, the photoemission spectroscopy becomes the basic method to study the modern materials sciences, such as strongly correlated materials, magnetics, superconductors, semiconductors, photonics, nanomaterials, spintronics, and so on. We develop three types of ultrahigh resolution photoelectron spectroscopy using excellent properties of soft X-ray laser.
- By the ultrahigh energy resolution angle-resolved photoemission, the superconducting anisotropy and Fermiology of strongly correlated materials have been studied. We found s+- type superconducting nodes of Fe-pnictides for the first time and the spin fluctuation is the most important for the superconducting mechanism of Fe pnictides. The reached energy resolution of about 70μeV is the world record and is quite powerful for these materials.
- By the ultra-high resolution photoelectron microscopy with the 2nm spatial resolution, we study the nm-size magnetic domain study and spintronics. The spatial resolution to observe the magnetic domains is the highest of the world.
- By the time-resolved photoemission with 100fs time resolution, we study the photo-induced phenomena, such as photo-induced metal-insulator transition of VO2. We are also studying photoinduced reactions of molecules on the surface.
Message from a senior
Professor Shin respects the independent spirits of students. Students enjoy the cutting-edge studies freely. We believe we will be able to participate in cutting-edge research in soft X-ray laser spectroscopy and materials science. Shin laboratory students enjoy a lot of activities besides their research lives. We usually become winner in softball and tennis games and the other sports activities held in ISSP. Our activities in the beer parties should also be described.