Exchange splitting of self-trapped excitons in AgCl from optically detected EPR at 95 GHz

Abstract

The optically detected EPR spectrum at 95 GHz of the self-trapped exciton in AgCl reveals a magnetic-field-induced mixing of its singlet and triplet states. From this effect we have derived the exchange splitting, which is too small for observation in the optical spectra, to be 5±1 ${\mathrm{cm}}^{\mathrm{-}1}$.