Crystal-Field Paschen-Back Effect on Ruby in Ultrahigh Magnetic Fields

Masaki Gen, Tomoki Kanda, Takashi Shitaokoshi +2

Zeeman spectra of the R lines of ruby (Cr${}^{3+}$: $\alpha$-Al${}_2$O${}_3$) were studied in ultrahigh magnetic fields up to 230 T by magneto-photoluminescence measurements. The observed…