Presentation at Annual meeting of Physical Society of Japan
A presentation is given at Annual meeting of Physical Society of Japan held at Tohoku University, Sendai, Japan.
3-14-1, Hiyoshi, Kohoku, Yokohama, Kanagawa 223-8522, Japan
Department of Physics, Faculty of Science and Technology, Keio University
A presentation is given at Annual meeting of Physical Society of Japan held at Tohoku University, Sendai, Japan.