Surface and Materials Science Laboratory
|Staff & Contact|
|Educational Staff||Prof. Hiroshi Daimon
Associate Prof. Ken Hattori
Assistant Prof. Sakura Takeda ,Hiroyuki Matsuda
Education and Research Activities in the Laboratory
All materials, when smaller than one nanometer in size, begin to exhibit different properties from those under normal conditions as exemplified by iron and gold: iron becomes nonmagnetic, while gold becomes highly reactive. These materials are the new microscopic materials essential for resource saving, energy saving, element strategy, and nanotechnology. They can be manufactured and analyzed on the surface of a solid at the atomic and electron levels. The Surface and Materials Science Laboratory studies atomic and electronic structures of surfaces and nanomaterials using unique approaches such as a two-dimensional photoelectron spectrometer, aiming to clarify the physical properties of nanomaterials and to create new functions from atomic and electron viewpoints. Our research targets include superstructures on semiconductor surfaces, magnetic thin-films and strongly correlated electron systems, as well as organic and biological molecule adsorbing surfaces vital to catalysis and molecular electronics.
We provide education not only on experiments but also on what is important as a researcher and a professional engineer, including having an active attitude toward obtaining knowledge through research, originality training, acquisition of technical skills to enhance laboratory techniques (such as shop practice, machine control, and data analysis), and cooperation with laboratory members. Students are expected to improve or create apparatuses before graduation. It is important for students to not only learn how to think systematically through seminars or lectures, but also to have contact with external researchers as well as the regular educational staff in the laboratory. We conduct joint research with several external research institutions including the synchrotron radiation facilities of SPring-8 and the Ritsumeikan University SR Center, and actively dispatch our students overseas.
1. Atomic structural analysis by stereoscopic viewing, RHEED, STM, photoelectron diffraction/holography
2. Energy bands on surfaces and their modification by electric field and strain
3. Atomic analysis of surface molecular reactions
4. Surface nanomaterials physical property analysis
5. New analyzers development
6. Electronic and atomic structure analysis of strongly correlated materials
Explanatory Pictures of Research Activities
- Fig. 1 A stereoscopic view of atomic arrangement through our two-dimensional photoelectron analyzer (DIANA) used as an atomic stereomicroscope
- Fig. 2 An STM image and 3D reciprocal lattice map of a 3D elongated island of α-FeSi2(110) on Si(001))
- Fig. 3 Strain effect on Si band structure
- Fig. 4 A photoelectron diffraction pattern of antiferromagnetic NiO
Recent Research Papers and Achievements
1. H.Matsuda, et al, J. Electron Spectrosc. Relat. Phenom. 195 78 (2014).
2. O.Romanyuk, K. Hattori, M. Someta, and H. Daimon, Phys. Rev. B 90 155305 (2014).
3. Sakura N. Takeda, et al, Rev. B 82 035318 (2010).
4. L.S. R. Kumara, M. Taguchi, et al, J. Chem. Phy. 141 044718 (2014).