| 2010-Present |
Head of International collaboration center of IMR |
| 2009-Present |
Visiting Professor, Huazhong University of Science and Technology |
| 2004-Present |
Professor, Institute for Material Research, Tohoku University Steering committee member of Center for Integrated Nano-Technology |
| 2001-2004 |
Professor, Department of Physics, Okayama University |
| 1995-2001 |
Associate Professor, Institute for Material Research, Tohoku University |
| 1991-1995 |
Research Associate, Institute for Solid State Physics, University of Tokyo |
