[17p-F202-1~12] 9.5 New functional materials and new phenomena

[17p-F202-7] Electronic structure of interstitial hydrogen in electride material LaScSi

〇Masatoshi Hiraishi¹, Kenji Kojima^1,2, Hirotaka Okabe^1,2, Soshi Takeshita¹, Akihiro Koda^1,2, Ryosuke Kadono^1,2, Wu Jiazhen³, Hideo Hosono^3,4 (1.KEK-IMSS, 2.Sokendai, 3.Tokyo Tech MSL, 4.Tokyo Tech MCES)

Keywords:Electride, Hydrogen, Electronic state

LaScSi, having two type of voids, is known as a hydrogen storage material as LaScSiH1.5. Recently, it is reported to serve as an electride in which the electron behaves as an anion, and that Ru-loaded LaScSi works as a catalyst of highly efficient ammonia synthesis, drawing much attention regarding the electronic structure of the hydrogen. In this presentation, we present the result of muon spin rotation measurement and discuss the electronic structure of hydrogen.