Light absorption in antiferromagnets
V. V. EremenkoInstitute for Low Temperature Physics and Technology, Academy of Sciences of the Ukrainian SSR , Kharkov, U.S.S.RÉ. G. PetrovInstitute for Theoretical Physics, Academy of Sciences of the Ukrainian SSR , Kiev, U.S.S.R
1977en
ABI
Annotatsiya
Abstract Light absorption in antiferromagnetic crystals in the frequency region of exciton and exciton-magnon transitions is considered within the framework of the exciton model. It is shown that the parameters of ‘dynamic’ and ‘static’ interactions determine not only the Davydov-splitting, but also the frequencies of exciton-magnon transitions. The experiments at strong magnetic fields are discussed, the exciton theory is shown to be in good agreement with the experiments.
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