Magnon modes and impurity spin resonance in FeBr2 doped with 1% Mn2+ |
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| Authors: | J. Tuchendler J. Magariño A.R. Fert D. Bertrand |
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| Affiliation: | Laboratoire de Physique des Solides associé au CNRS, INSA, Département de Physique, Avenue de Rangueil, 31077 Toulosse Cedex, France |
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| Abstract: | We report results of far infrared magneto-absorption experiments in FeBr2 doped with 1% MnBr2. Using radiations from several carcinotrons covering the frequency range 77–600 GHz, we observe both the spectra corresponding to the localized Mn2+ impurity modes and the uniform magnon modes of the host crystal. The excitation energy gap of the A.F. magnons at zero field is Eo = 500 ± 2 GHz. |
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