Migration of excitons in the antiferromagnet CsMnF3
É. V. MatyushkinPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovV. I. SmushkovPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov
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The luminescence and excitation spectra of the three-dimensional antiferromagnet CsMnF3 are investigated in the temperature range 4.2−60°K. Self-localization of magnetic excitons is observed at low temperatures. It is shown that the main reason for this self-localization is that the transfer of electronic excitation energy is two-dimensional in character, due to the specifics of the magnetic structure of the crystal.
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