Electron -value comparison of paramagnetic muonium and hydrogen centers in rutile TiO

伊藤 孝   ; 髭本 亘  ; 幸田 章宏*

Ito, Takashi; Higemoto, Wataru; Koda, Akihiro*

Muonium (Mu) is widely used as a model for isolated hydrogen in condensed matter, but whether its electronic state is truly equivalent to that of hydrogen remains to be tested with an orbital-sensitive probe. Here we use double electron-muon resonance to determine the electron values of the paramagnetic Mu center in rutile TiO for magnetic fields along [100], [110], and [001] directions. The obtained values closely follow those of the H-related Ti paramagnetic center in both magnitude and anisotropy. This agreement tests the Mu-H correspondence at the level of the Ti electronic state and supports a common localized Ti electronic core for the two centers.