Author Affiliations

Takumi Fukuda,¹ Kotaro Makino,² Yuta Saito,² Paul Fons,³ Alexander V. Kolobov,⁴ Atsushi Ando,² Takuya Mori,⁵ Ryo Ishikawa,⁵ Keiji Ueno,⁵ Jessica Afalla,¹ and Muneaki Hase¹

¹Department of Applied Physics, Graduate school of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8573, Japan

²Device Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 2, 1-1-1 Umezono, Tsukuba 305-8568, Japan

³Department of Electronics and Electrical Engineering, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku district, Yokohama city 223-8522, Japan

⁴Department of Physical Electronics, Institute of Physics, Herzen State Pedagogical University of Russia, 48 Moika Embankment, St. Petersburg, 191186, Russia

⁵Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan