Knowledge Bank

Recently developed magnetic circularly polarized emission (MCPE) experiments give information about relaxed excited states and ground state vibrational levels that cannot be obtained from the more well-known magnetic circular dichroism (MCD) experiments. Furthermore, the orientation dependent of Zeeman effects in $U\prime$ octahedral states give rise to orientation dependent MCD and MCPE spectra. In $Cs2GeF6:Mn4+$ our high resolution MCD and MCPE spectra along the 111 and 100 directions give information about the various vibrational levels in the $\mathrm{<mrow\; data-mjx-texclass="ORD">4</mrow>}A2g$ and $\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}Eg$ states.