Formation and characterization of hydrogen boride sheets derived from MgB₂ by cation exchange

Hiroaki Nishino, Takeshi Fujita, Nguyen Thanh Cuong, Satoshi Tominaka, Masahiro Miyauchi, Soshi Iimura, Akihiko Hirata, Naoto Umezawa, Susumu Okada, Eiji Nishibori, Asahi Fujino, Tomohiro Fujimori, Shin Ichi Ito, Junji Nakamura, Hideo Hosono, Takahiro Kondo^*