Exciton–magnon absorption of light in noncollinear antiferromagnets at <i>T</i> ≠0
V. V. EremenkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar'kovYu. G. LitvinenkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar'kovV. V. ShapiroPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar'kovA. VerdyanPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar'kov
ABI
Abstract
Electric dipole exciton–magnon absorption of light has been discovered and studied in antiferromagnets at the frequencies of the purely excitonic transition and of the “hot” magnon satellite induced by the disruption of the antiparallelism of the sublattice magnetic moments as well as by the thermal population of the lower energy levels.
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