Multiphoton absorption in antiferromagnetic manganese compounds
A. N. LebedenkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovÉ. V. MatyushykinPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovV. I. SmushkovPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Kharkov
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Аннотация
We have studied multiphoton absorption in three-dimensional (RbMnCl3, CsMnCl3) and quasi-two-dimensional (NaMnCl3, BaMnF4, and [CH2(NH3)2CH] MnCl4) layered antiferromagnets for temperatures from 2–20.4 K. We observe that the nonlinearity in the absorption process is not the same in the various crystals, and depends on the intensity of the transmitted light in some of them. A relationship between the observed phenomena and the crystal structure is demonstrated.
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